2021-01-07 22:01:49 +01:00
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< li > < a class = "reference internal" href = "#" > Welcome to cachings’ < / a > < ul >
< li > < a class = "reference internal" href = "#caching-caching-module" > caching (Caching Module)< / a > < / li >
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< div class = "section" id = "module-caching" >
< span id = "welcome-to-cachings-s-documentation" > < / span > < h1 > Welcome to cachings’ < a class = "headerlink" href = "#module-caching" title = "Permalink to this headline" > ¶< / a > < / h1 >
< div class = "section" id = "caching-caching-module" >
< h2 > caching (Caching Module)< a class = "headerlink" href = "#caching-caching-module" title = "Permalink to this headline" > ¶< / a > < / h2 >
< p > < strong > Author:< / strong > < / p >
< ul class = "simple" >
< li > Dirk Alders < < a class = "reference external" href = "mailto:sudo-dirk%40mount-mockery.de" > sudo-dirk< span > @ < / span > mount-mockery< span > . < / span > de< / a > > < / li >
< / ul >
< p > < strong > Description:< / strong > < / p >
< blockquote >
< div > This Module supports functions and classes for caching e.g. properties of other instances.< / div > < / blockquote >
< p > < strong > Submodules:< / strong > < / p >
< ul class = "simple" >
< li > < a class = "reference internal" href = "#caching.property_cache_json" title = "caching.property_cache_json" > < code class = "xref py py-class docutils literal notranslate" > < span class = "pre" > caching.property_cache_json< / span > < / code > < / a > < / li >
< li > < a class = "reference internal" href = "#caching.property_cache_pickle" title = "caching.property_cache_pickle" > < code class = "xref py py-class docutils literal notranslate" > < span class = "pre" > caching.property_cache_pickle< / span > < / code > < / a > < / li >
< / ul >
< p > < strong > Unittest:< / strong > < / p >
< blockquote >
< div > See also the < a class = "reference download internal" download = "" href = "_downloads/f5f51665bfc67c10ccc039770b738067/unittest.pdf" > < code class = "xref download docutils literal notranslate" > < span class = "pre" > unittest< / span > < / code > < / a > documentation.< / div > < / blockquote >
< dl class = "class" >
< dt id = "caching.property_cache_json" >
< em class = "property" > class < / em > < code class = "descclassname" > caching.< / code > < code class = "descname" > property_cache_json< / code > < span class = "sig-paren" > (< / span > < em > source_instance< / em > , < em > cache_filename< / em > , < em > load_all_on_init=False< / em > , < em > callback_on_data_storage=None< / em > < span class = "sig-paren" > )< / span > < a class = "headerlink" href = "#caching.property_cache_json" title = "Permalink to this definition" > ¶< / a > < / dt >
< dd > < p > Class to cache properties, which take longer on initialising than reading a file in json format. See also parent < a class = "reference internal" href = "#caching.property_cache_pickle" title = "caching.property_cache_pickle" > < code class = "xref py py-class docutils literal notranslate" > < span class = "pre" > property_cache_pickle< / span > < / code > < / a > < / p >
< table class = "docutils field-list" frame = "void" rules = "none" >
< col class = "field-name" / >
< col class = "field-body" / >
< tbody valign = "top" >
< tr class = "field-odd field" > < th class = "field-name" > Parameters:< / th > < td class = "field-body" > < ul class = "first last simple" >
< li > < strong > source_instance< / strong > (< em > instance< / em > ) – < / li >
< li > < strong > cache_filename< / strong > (< em > str< / em > ) – < / li >
< li > < strong > load_all_on_init< / strong > – < / li >
< / ul >
< / td >
< / tr >
< / tbody >
< / table >
< div class = "admonition warning" >
< p class = "first admonition-title" > Warning< / p >
< ul class = "last simple" >
< li > This class uses json. You should < strong > only< / strong > use keys of type string!< / li >
< li > Unicode types are transfered to strings< / li >
< / ul >
< / div >
< div class = "admonition note" >
< p class = "first admonition-title" > Note< / p >
< p > source_instance needs to have at least the following methods: uid(), keys(), data_version(), get()< / p >
< ul class = "last simple" >
< li > uid(): returns the unique id of the source.< / li >
< li > keys(): returns a list of all available keys.< / li >
< li > data_version(): returns a version number of the current data (it should be increased, if the get method of the source instance returns improved values or the data structure had been changed).< / li >
< li > get(key, default): returns the property for a key. If key does not exists, default will be returned.< / li >
< / ul >
< / div >
< p > Reasons for updating the complete data set:< / p >
< ul class = "simple" >
< li > UID of source_instance has changed (in comparison to the cached value).< / li >
< li > data_version is increased< / li >
< / ul >
< p > < strong > Example:< / strong > < / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "ch" > #!/usr/bin/env python< / span >
< span class = "c1" > # -*- coding: UTF-8 -*-< / span >
< span class = "kn" > import< / span > < span class = "nn" > sys< / span >
< span class = "kn" > import< / span > < span class = "nn" > time< / span >
< span class = "n" > sys< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "s1" > ' ../..' < / span > < span class = "p" > )< / span >
< span class = "kn" > import< / span > < span class = "nn" > caching< / span >
< span class = "kn" > import< / span > < span class = "nn" > report< / span >
< span class = "n" > report< / span > < span class = "o" > .< / span > < span class = "n" > stdoutLoggingConfigure< / span > < span class = "p" > (< / span > < span class = "n" > log_name_lvl< / span > < span class = "o" > =< / span > < span class = "p" > [(< / span > < span class = "s1" > ' root' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' DEBUG' < / span > < span class = "p" > ),< / span > < span class = "p" > ])< / span >
< span class = "k" > class< / span > < span class = "nc" > test_slow_data< / span > < span class = "p" > (< / span > < span class = "nb" > object< / span > < span class = "p" > ):< / span >
< span class = "n" > _ONE< / span > < span class = "o" > =< / span > < span class = "s1" > ' 1' < / span >
< span class = "n" > _TWO< / span > < span class = "o" > =< / span > < span class = "s1" > ' 2' < / span >
< span class = "n" > _THREE< / span > < span class = "o" > =< / span > < span class = "s1" > ' _property_cache_data_version_' < / span >
< span class = "n" > _FOUR< / span > < span class = "o" > =< / span > < span class = "s1" > ' _property_cache_uid_' < / span >
< span class = "n" > _FIVE< / span > < span class = "o" > =< / span > < span class = "s1" > ' __property_cache_uid_' < / span >
< span class = "n" > KEYS< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "n" > _ONE< / span > < span class = "p" > ,< / span > < span class = "n" > _TWO< / span > < span class = "p" > ,< / span > < span class = "n" > _THREE< / span > < span class = "p" > ,< / span > < span class = "n" > _FOUR< / span > < span class = "p" > ,< / span > < span class = "n" > _FIVE< / span > < span class = "p" > ]< / span >
< span class = "n" > VERS< / span > < span class = "o" > =< / span > < span class = "mf" > 0.1< / span >
< span class = "k" > def< / span > < span class = "nf" > data_version< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > VERS< / span >
< span class = "k" > def< / span > < span class = "nf" > one< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _ONE< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > two< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _TWO< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > three< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _THREE< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > four< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _FOUR< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > five< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _FIVE< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > key< / span > < span class = "p" > ,< / span > < span class = "n" > default< / span > < span class = "o" > =< / span > < span class = "kc" > None< / span > < span class = "p" > ):< / span >
< span class = "k" > def< / span > < span class = "nf" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > k< / span > < span class = "p" > ):< / span >
< span class = "n" > sys< / span > < span class = "o" > .< / span > < span class = "n" > stdout< / span > < span class = "o" > .< / span > < span class = "n" > write< / span > < span class = "p" > (< / span > < span class = "s1" > ' slow get executed for < / span > < span class = "si" > %s< / span > < span class = "se" > \n< / span > < span class = "s1" > ' < / span > < span class = "o" > %< / span > < span class = "n" > k< / span > < span class = "p" > )< / span >
< span class = "n" > time< / span > < span class = "o" > .< / span > < span class = "n" > sleep< / span > < span class = "p" > (< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _ONE< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' one' < / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _TWO< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' two' < / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _THREE< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' three' < / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _FOUR< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' four' < / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _FIVE< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' five' < / span >
< span class = "k" > return< / span > < span class = "n" > default< / span >
< span class = "k" > def< / span > < span class = "nf" > keys< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > KEYS< / span >
< span class = "k" > def< / span > < span class = "nf" > uid< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "kc" > None< / span >
< span class = "k" > class< / span > < span class = "nc" > tsd_cache_json< / span > < span class = "p" > (< / span > < span class = "n" > test_slow_data< / span > < span class = "p" > ):< / span >
< span class = "k" > def< / span > < span class = "nf" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > ):< / span >
< span class = "n" > test_slow_data< / span > < span class = "o" > .< / span > < span class = "fm" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > )< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _cached_data< / span > < span class = "o" > =< / span > < span class = "n" > caching< / span > < span class = "o" > .< / span > < span class = "n" > property_cache_json< / span > < span class = "p" > (< / span > < span class = "n" > test_slow_data< / span > < span class = "p" > (< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > ),< / span > < span class = "s1" > ' cache.json' < / span > < span class = "p" > ,< / span > < span class = "n" > load_all_on_init< / span > < span class = "o" > =< / span > < span class = "kc" > False< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > two< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "n" > test_slow_data< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _TWO< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > key< / span > < span class = "p" > ,< / span > < span class = "n" > default< / span > < span class = "o" > =< / span > < span class = "kc" > None< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _cached_data< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > ,< / span > < span class = "n" > default< / span > < span class = "p" > )< / span >
< span class = "n" > data< / span > < span class = "o" > =< / span > < span class = "n" > tsd_cache_json< / span > < span class = "p" > ()< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "s1" > ' Testing property_cache (json):< / span > < span class = "se" > \\< / span > < span class = "s1" > n--------------------------------' < / span > < span class = "p" > )< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > one< / span > < span class = "p" > ())< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > two< / span > < span class = "p" > ())< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > three< / span > < span class = "p" > ())< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > four< / span > < span class = "p" > ())< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > five< / span > < span class = "p" > ())< / span >
< / pre > < / div >
< / div >
< p > Will result on the first execution to the following output (with a long execution time):< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Testing< / span > < span class = "n" > property_cache< / span > < span class = "p" > (< / span > < span class = "n" > json< / span > < span class = "p" > ):< / span > \< span class = "n" > n< / span > < span class = "o" > --------------------------------< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 45< / span > < span class = "p" > ,< / span > < span class = "mi" > 282< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Cache< / span > < span class = "n" > file< / span > < span class = "n" > does< / span > < span class = "ow" > not< / span > < span class = "n" > exists< / span > < span class = "p" > (< / span > < span class = "n" > yet< / span > < span class = "p" > )< / span > < span class = "o" > .< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 45< / span > < span class = "p" > ,< / span > < span class = "mi" > 283< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > json< / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "mi" > 1< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 48< / span > < span class = "p" > ,< / span > < span class = "mi" > 285< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' 1' < / span > < span class = "kn" > from< / span > < span class = "nn" > source< / span > < span class = "n" > instance< / span > < span class = "p" > (< / span > < span class = "s1" > ' one' < / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 48< / span > < span class = "p" > ,< / span > < span class = "mi" > 286< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > json< / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > one< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "mi" > 2< / span >
< span class = "n" > two< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "n" > _property_cache_data_version_< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 54< / span > < span class = "p" > ,< / span > < span class = "mi" > 292< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' _property_cache_data_version_' < / span > < span class = "kn" > from< / span > < span class = "nn" > source< / span > < span class = "n" > instance< / span > < span class = "p" > (< / span > < span class = "s1" > ' three' < / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 54< / span > < span class = "p" > ,< / span > < span class = "mi" > 293< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > json< / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > three< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "n" > _property_cache_uid_< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 57< / span > < span class = "p" > ,< / span > < span class = "mi" > 297< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' _property_cache_uid_' < / span > < span class = "kn" > from< / span > < span class = "nn" > source< / span > < span class = "n" > instance< / span > < span class = "p" > (< / span > < span class = "s1" > ' four' < / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 57< / span > < span class = "p" > ,< / span > < span class = "mi" > 297< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > json< / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > four< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "n" > __property_cache_uid_< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 51< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "p" > ,< / span > < span class = "mi" > 301< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' __property_cache_uid_' < / span > < span class = "kn" > from< / span > < span class = "nn" > source< / span > < span class = "n" > instance< / span > < span class = "p" > (< / span > < span class = "s1" > ' five' < / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 51< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "p" > ,< / span > < span class = "mi" > 301< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > json< / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > five< / span >
< / pre > < / div >
< / div >
< p > With every following execution (slow for getting “two” which is not cached - see implementation):< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Testing< / span > < span class = "n" > property_cache< / span > < span class = "p" > (< / span > < span class = "n" > json< / span > < span class = "p" > ):< / span > \< span class = "n" > n< / span > < span class = "o" > --------------------------------< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 51< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "p" > ,< / span > < span class = "mi" > 380< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "n" > properties< / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > json< / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 51< / span > < span class = "p" > :< / span > < span class = "mi" > 00< / span > < span class = "p" > ,< / span > < span class = "mi" > 380< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Providing< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' 1' < / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "s1" > ' one' < / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > one< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "mi" > 2< / span >
< span class = "n" > two< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 51< / span > < span class = "p" > :< / span > < span class = "mi" > 03< / span > < span class = "p" > ,< / span > < span class = "mi" > 381< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Providing< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' _property_cache_data_version_' < / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "s1" > ' three' < / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > three< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 51< / span > < span class = "p" > :< / span > < span class = "mi" > 03< / span > < span class = "p" > ,< / span > < span class = "mi" > 381< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Providing< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' _property_cache_uid_' < / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "s1" > ' four' < / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > four< / span >
2021-01-14 00:53:02 +01:00
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 51< / span > < span class = "p" > :< / span > < span class = "mi" > 03< / span > < span class = "p" > ,< / span > < span class = "mi" > 381< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > JsonCache< / span > < span class = "p" > :< / span > < span class = "n" > Providing< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' __property_cache_uid_' < / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "s1" > ' five' < / span > < span class = "p" > )< / span >
2021-01-07 22:01:49 +01:00
< span class = "n" > five< / span >
< / pre > < / div >
< / div >
< / dd > < / dl >
< dl class = "class" >
< dt id = "caching.property_cache_pickle" >
< em class = "property" > class < / em > < code class = "descclassname" > caching.< / code > < code class = "descname" > property_cache_pickle< / code > < span class = "sig-paren" > (< / span > < em > source_instance< / em > , < em > cache_filename< / em > , < em > load_all_on_init=False< / em > , < em > callback_on_data_storage=None< / em > < span class = "sig-paren" > )< / span > < a class = "headerlink" href = "#caching.property_cache_pickle" title = "Permalink to this definition" > ¶< / a > < / dt >
< dd > < p > Class to cache properties, which take longer on initialising than reading a file in pickle format.< / p >
< table class = "docutils field-list" frame = "void" rules = "none" >
< col class = "field-name" / >
< col class = "field-body" / >
< tbody valign = "top" >
< tr class = "field-odd field" > < th class = "field-name" > Parameters:< / th > < td class = "field-body" > < ul class = "first last simple" >
< li > < strong > source_instance< / strong > (< em > instance< / em > ) – < / li >
< li > < strong > cache_filename< / strong > (< em > str< / em > ) – < / li >
< li > < strong > load_all_on_init< / strong > – < / li >
< / ul >
< / td >
< / tr >
< / tbody >
< / table >
< div class = "admonition note" >
< p class = "first admonition-title" > Note< / p >
< p > source_instance needs to have at least the following methods: uid(), keys(), data_version(), get()< / p >
< ul class = "last simple" >
< li > uid(): returns the unique id of the source.< / li >
< li > keys(): returns a list of all available keys.< / li >
< li > data_version(): returns a version number of the current data (it should be increased, if the get method of the source instance returns improved values or the data structure had been changed).< / li >
< li > get(key, default): returns the property for a key. If key does not exists, default will be returned.< / li >
< / ul >
< / div >
< p > Reasons for updating the complete data set:< / p >
< ul class = "simple" >
< li > UID of source_instance has changed (in comparison to the cached value).< / li >
< li > data_version is increased< / li >
< / ul >
< p > < strong > Example:< / strong > < / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "ch" > #!/usr/bin/env python< / span >
< span class = "c1" > # -*- coding: UTF-8 -*-< / span >
< span class = "kn" > import< / span > < span class = "nn" > sys< / span >
< span class = "kn" > import< / span > < span class = "nn" > time< / span >
< span class = "n" > sys< / span > < span class = "o" > .< / span > < span class = "n" > path< / span > < span class = "o" > .< / span > < span class = "n" > append< / span > < span class = "p" > (< / span > < span class = "s1" > ' ../..' < / span > < span class = "p" > )< / span >
< span class = "kn" > import< / span > < span class = "nn" > caching< / span >
< span class = "kn" > import< / span > < span class = "nn" > report< / span >
< span class = "n" > report< / span > < span class = "o" > .< / span > < span class = "n" > stdoutLoggingConfigure< / span > < span class = "p" > (< / span > < span class = "n" > log_name_lvl< / span > < span class = "o" > =< / span > < span class = "p" > [(< / span > < span class = "s1" > ' root' < / span > < span class = "p" > ,< / span > < span class = "s1" > ' DEBUG' < / span > < span class = "p" > ),< / span > < span class = "p" > ])< / span >
< span class = "k" > class< / span > < span class = "nc" > test_slow_data< / span > < span class = "p" > (< / span > < span class = "nb" > object< / span > < span class = "p" > ):< / span >
< span class = "n" > _ONE< / span > < span class = "o" > =< / span > < span class = "s1" > ' 1' < / span >
< span class = "n" > _TWO< / span > < span class = "o" > =< / span > < span class = "s1" > ' 2' < / span >
< span class = "n" > _THREE< / span > < span class = "o" > =< / span > < span class = "s1" > ' _property_cache_data_version_' < / span >
< span class = "n" > _FOUR< / span > < span class = "o" > =< / span > < span class = "s1" > ' _property_cache_uid_' < / span >
< span class = "n" > _FIVE< / span > < span class = "o" > =< / span > < span class = "s1" > ' __property_cache_uid_' < / span >
< span class = "n" > KEYS< / span > < span class = "o" > =< / span > < span class = "p" > [< / span > < span class = "n" > _ONE< / span > < span class = "p" > ,< / span > < span class = "n" > _TWO< / span > < span class = "p" > ,< / span > < span class = "n" > _THREE< / span > < span class = "p" > ,< / span > < span class = "n" > _FOUR< / span > < span class = "p" > ,< / span > < span class = "n" > _FIVE< / span > < span class = "p" > ]< / span >
< span class = "n" > VERS< / span > < span class = "o" > =< / span > < span class = "mf" > 0.1< / span >
< span class = "k" > def< / span > < span class = "nf" > data_version< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > VERS< / span >
< span class = "k" > def< / span > < span class = "nf" > one< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _ONE< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > two< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _TWO< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > three< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _THREE< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > four< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _FOUR< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > five< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _FIVE< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > key< / span > < span class = "p" > ,< / span > < span class = "n" > default< / span > < span class = "o" > =< / span > < span class = "kc" > None< / span > < span class = "p" > ):< / span >
< span class = "k" > def< / span > < span class = "nf" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > k< / span > < span class = "p" > ):< / span >
< span class = "n" > sys< / span > < span class = "o" > .< / span > < span class = "n" > stdout< / span > < span class = "o" > .< / span > < span class = "n" > write< / span > < span class = "p" > (< / span > < span class = "s1" > ' slow get executed for < / span > < span class = "si" > %s< / span > < span class = "se" > \n< / span > < span class = "s1" > ' < / span > < span class = "o" > %< / span > < span class = "n" > k< / span > < span class = "p" > )< / span >
< span class = "n" > time< / span > < span class = "o" > .< / span > < span class = "n" > sleep< / span > < span class = "p" > (< / span > < span class = "mi" > 3< / span > < span class = "p" > )< / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _ONE< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' one' < / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _TWO< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' two' < / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _THREE< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' three' < / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _FOUR< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' four' < / span >
< span class = "k" > if< / span > < span class = "n" > key< / span > < span class = "o" > ==< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _FIVE< / span > < span class = "p" > :< / span >
< span class = "n" > print_n_sleep< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > )< / span >
< span class = "k" > return< / span > < span class = "s1" > ' five' < / span >
< span class = "k" > return< / span > < span class = "n" > default< / span >
< span class = "k" > def< / span > < span class = "nf" > keys< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > KEYS< / span >
< span class = "k" > def< / span > < span class = "nf" > uid< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "kc" > None< / span >
< span class = "k" > class< / span > < span class = "nc" > tsd_cache_pickle< / span > < span class = "p" > (< / span > < span class = "n" > test_slow_data< / span > < span class = "p" > ):< / span >
< span class = "k" > def< / span > < span class = "nf" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > ):< / span >
< span class = "n" > test_slow_data< / span > < span class = "o" > .< / span > < span class = "fm" > __init__< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > )< / span >
< span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _cached_data< / span > < span class = "o" > =< / span > < span class = "n" > caching< / span > < span class = "o" > .< / span > < span class = "n" > property_cache_pickle< / span > < span class = "p" > (< / span > < span class = "n" > test_slow_data< / span > < span class = "p" > (< / span > < span class = "o" > *< / span > < span class = "n" > args< / span > < span class = "p" > ,< / span > < span class = "o" > **< / span > < span class = "n" > kwargs< / span > < span class = "p" > ),< / span > < span class = "s1" > ' cache.pickle' < / span > < span class = "p" > ,< / span > < span class = "n" > load_all_on_init< / span > < span class = "o" > =< / span > < span class = "kc" > False< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > two< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "n" > test_slow_data< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _TWO< / span > < span class = "p" > )< / span >
< span class = "k" > def< / span > < span class = "nf" > get< / span > < span class = "p" > (< / span > < span class = "bp" > self< / span > < span class = "p" > ,< / span > < span class = "n" > key< / span > < span class = "p" > ,< / span > < span class = "n" > default< / span > < span class = "o" > =< / span > < span class = "kc" > None< / span > < span class = "p" > ):< / span >
< span class = "k" > return< / span > < span class = "bp" > self< / span > < span class = "o" > .< / span > < span class = "n" > _cached_data< / span > < span class = "o" > .< / span > < span class = "n" > get< / span > < span class = "p" > (< / span > < span class = "n" > key< / span > < span class = "p" > ,< / span > < span class = "n" > default< / span > < span class = "p" > )< / span >
< span class = "n" > data< / span > < span class = "o" > =< / span > < span class = "n" > tsd_cache_pickle< / span > < span class = "p" > ()< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "s1" > ' Testing property_cache (pickle):< / span > < span class = "se" > \\< / span > < span class = "s1" > n--------------------------------' < / span > < span class = "p" > )< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > one< / span > < span class = "p" > ())< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > two< / span > < span class = "p" > ())< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > three< / span > < span class = "p" > ())< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > four< / span > < span class = "p" > ())< / span >
< span class = "nb" > print< / span > < span class = "p" > (< / span > < span class = "n" > data< / span > < span class = "o" > .< / span > < span class = "n" > five< / span > < span class = "p" > ())< / span >
< / pre > < / div >
< / div >
< p > Will result on the first execution to the following output (with a long execution time):< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Testing< / span > < span class = "n" > property_cache< / span > < span class = "p" > (< / span > < span class = "n" > pickle< / span > < span class = "p" > ):< / span > \< span class = "n" > n< / span > < span class = "o" > --------------------------------< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 27< / span > < span class = "p" > ,< / span > < span class = "mi" > 103< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Cache< / span > < span class = "n" > file< / span > < span class = "n" > does< / span > < span class = "ow" > not< / span > < span class = "n" > exists< / span > < span class = "p" > (< / span > < span class = "n" > yet< / span > < span class = "p" > )< / span > < span class = "o" > .< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 27< / span > < span class = "p" > ,< / span > < span class = "mi" > 103< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > pickle< / span > < span class = "p" > )< / span >
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< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "mi" > 1< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 30< / span > < span class = "p" > ,< / span > < span class = "mi" > 107< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' 1' < / span > < span class = "kn" > from< / span > < span class = "nn" > source< / span > < span class = "n" > instance< / span > < span class = "p" > (< / span > < span class = "s1" > ' one' < / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 30< / span > < span class = "p" > ,< / span > < span class = "mi" > 107< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > pickle< / span > < span class = "p" > )< / span >
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< span class = "n" > one< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "mi" > 2< / span >
< span class = "n" > two< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "n" > _property_cache_data_version_< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 36< / span > < span class = "p" > ,< / span > < span class = "mi" > 112< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' _property_cache_data_version_' < / span > < span class = "kn" > from< / span > < span class = "nn" > source< / span > < span class = "n" > instance< / span > < span class = "p" > (< / span > < span class = "s1" > ' three' < / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 36< / span > < span class = "p" > ,< / span > < span class = "mi" > 113< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > pickle< / span > < span class = "p" > )< / span >
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< span class = "n" > three< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "n" > _property_cache_uid_< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 39< / span > < span class = "p" > ,< / span > < span class = "mi" > 116< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' _property_cache_uid_' < / span > < span class = "kn" > from< / span > < span class = "nn" > source< / span > < span class = "n" > instance< / span > < span class = "p" > (< / span > < span class = "s1" > ' four' < / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 39< / span > < span class = "p" > ,< / span > < span class = "mi" > 117< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > pickle< / span > < span class = "p" > )< / span >
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< span class = "n" > four< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "n" > __property_cache_uid_< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 42< / span > < span class = "p" > ,< / span > < span class = "mi" > 120< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' __property_cache_uid_' < / span > < span class = "kn" > from< / span > < span class = "nn" > source< / span > < span class = "n" > instance< / span > < span class = "p" > (< / span > < span class = "s1" > ' five' < / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 42< / span > < span class = "p" > ,< / span > < span class = "mi" > 121< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > cache< / span > < span class = "o" > -< / span > < span class = "n" > file< / span > < span class = "n" > stored< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > pickle< / span > < span class = "p" > )< / span >
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< span class = "n" > five< / span >
< / pre > < / div >
< / div >
< p > With every following execution (slow for getting “two” which is not cached - see implementation):< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "n" > Testing< / span > < span class = "n" > property_cache< / span > < span class = "p" > (< / span > < span class = "n" > pickle< / span > < span class = "p" > ):< / span > \< span class = "n" > n< / span > < span class = "o" > --------------------------------< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 42< / span > < span class = "p" > ,< / span > < span class = "mi" > 200< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > INFO< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Loading< / span > < span class = "n" > properties< / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "n" > cache< / span > < span class = "o" > .< / span > < span class = "n" > pickle< / span > < span class = "p" > )< / span >
< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 42< / span > < span class = "p" > ,< / span > < span class = "mi" > 200< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Providing< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' 1' < / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "s1" > ' one' < / span > < span class = "p" > )< / span >
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< span class = "n" > one< / span >
< span class = "n" > slow< / span > < span class = "n" > get< / span > < span class = "n" > executed< / span > < span class = "k" > for< / span > < span class = "mi" > 2< / span >
< span class = "n" > two< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 45< / span > < span class = "p" > ,< / span > < span class = "mi" > 201< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Providing< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' _property_cache_data_version_' < / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "s1" > ' three' < / span > < span class = "p" > )< / span >
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< span class = "n" > three< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 45< / span > < span class = "p" > ,< / span > < span class = "mi" > 201< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Providing< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' _property_cache_uid_' < / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "s1" > ' four' < / span > < span class = "p" > )< / span >
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< span class = "n" > four< / span >
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< span class = "mi" > 2021< / span > < span class = "o" > -< / span > < span class = "mi" > 01< / span > < span class = "o" > -< / span > < span class = "mi" > 14< / span > < span class = "mi" > 00< / span > < span class = "p" > :< / span > < span class = "mi" > 50< / span > < span class = "p" > :< / span > < span class = "mi" > 45< / span > < span class = "p" > ,< / span > < span class = "mi" > 201< / span > < span class = "p" > :< / span > < span class = "n" > root< / span > < span class = "o" > .< / span > < span class = "n" > caching< / span > < span class = "o" > -< / span > < span class = "n" > DEBUG< / span > < span class = "o" > -< / span > < span class = "n" > PickCache< / span > < span class = "p" > :< / span > < span class = "n" > Providing< / span > < span class = "nb" > property< / span > < span class = "k" > for< / span > < span class = "s1" > ' __property_cache_uid_' < / span > < span class = "kn" > from< / span > < span class = "nn" > cache< / span > < span class = "p" > (< / span > < span class = "s1" > ' five' < / span > < span class = "p" > )< / span >
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< span class = "n" > five< / span >
< / pre > < / div >
< / div >
< dl class = "method" >
< dt id = "caching.property_cache_pickle.get" >
< code class = "descname" > get< / code > < span class = "sig-paren" > (< / span > < em > key< / em > , < em > default=None< / em > < span class = "sig-paren" > )< / span > < a class = "headerlink" href = "#caching.property_cache_pickle.get" title = "Permalink to this definition" > ¶< / a > < / dt >
< dd > < p > Method to get the cached property. If key does not exists in cache, the property will be loaded from source_instance and stored in cache (file).< / p >
< table class = "docutils field-list" frame = "void" rules = "none" >
< col class = "field-name" / >
< col class = "field-body" / >
< tbody valign = "top" >
< tr class = "field-odd field" > < th class = "field-name" > Parameters:< / th > < td class = "field-body" > < ul class = "first simple" >
< li > < strong > key< / strong > – < / li >
< li > < strong > default< / strong > – < / li >
< / ul >
< / td >
< / tr >
< tr class = "field-even field" > < th class = "field-name" > Returns:< / th > < td class = "field-body" > < p class = "first last" > value for a given key or default value.< / p >
< / td >
< / tr >
< / tbody >
< / table >
< / dd > < / dl >
< dl class = "method" >
< dt id = "caching.property_cache_pickle.keys" >
< code class = "descname" > keys< / code > < span class = "sig-paren" > (< / span > < span class = "sig-paren" > )< / span > < a class = "headerlink" href = "#caching.property_cache_pickle.keys" title = "Permalink to this definition" > ¶< / a > < / dt >
< dd > < p > Method to get the available keys (from < code class = "xref py py-data docutils literal notranslate" > < span class = "pre" > source_instance< / span > < / code > ).< / p >
< / dd > < / dl >
< / dd > < / dl >
< / div >
< div class = "toctree-wrapper compound" >
< / div >
< / div >
< div class = "section" id = "indices-and-tables" >
< h1 > Indices and tables< a class = "headerlink" href = "#indices-and-tables" title = "Permalink to this headline" > ¶< / a > < / h1 >
< ul class = "simple" >
< li > < a class = "reference internal" href = "genindex.html" > < span class = "std std-ref" > Index< / span > < / a > < / li >
< li > < a class = "reference internal" href = "py-modindex.html" > < span class = "std std-ref" > Module Index< / span > < / a > < / li >
< li > < a class = "reference internal" href = "search.html" > < span class = "std std-ref" > Search Page< / span > < / a > < / li >
< / ul >
< / div >
< / div >
< / div >
< footer >
< hr / >
< div role = "contentinfo" >
< p >
© Copyright 2021, Dirk Alders
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Built with < a href = "http://sphinx-doc.org/" > Sphinx< / a > using a
< a href = "https://github.com/rtfd/sphinx_rtd_theme" > theme< / a >
provided by < a href = "https://readthedocs.org" > Read the Docs< / a > .
< / footer >
< / div >
< / div >
< / section >
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< script type = "text/javascript" >
jQuery(function () {
SphinxRtdTheme.Navigation.enable(true);
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< / body >
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