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- <li><a class="reference internal" href="#">Welcome to fstools’s documentation!</a><ul>
- <li><a class="reference internal" href="#fstools-filesystem-tools">fstools (Filesystem Tools)</a></li>
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-
- <div class="section" id="module-fstools">
- <span id="welcome-to-fstools-s-documentation"></span><h1>Welcome to fstools’s documentation!<a class="headerlink" href="#module-fstools" title="Permalink to this headline">¶</a></h1>
- <div class="section" id="fstools-filesystem-tools">
- <h2>fstools (Filesystem Tools)<a class="headerlink" href="#fstools-filesystem-tools" 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 to handle files and paths</div></blockquote>
- <p><strong>Submodules:</strong></p>
- <ul class="simple">
- <li><a class="reference internal" href="#fstools.dirlist" title="fstools.dirlist"><code class="xref py py-func docutils literal notranslate"><span class="pre">fstools.dirlist()</span></code></a></li>
- <li><a class="reference internal" href="#fstools.filelist" title="fstools.filelist"><code class="xref py py-func docutils literal notranslate"><span class="pre">fstools.filelist()</span></code></a></li>
- <li><a class="reference internal" href="#fstools.is_writeable" title="fstools.is_writeable"><code class="xref py py-func docutils literal notranslate"><span class="pre">fstools.is_writeable()</span></code></a></li>
- <li><a class="reference internal" href="#fstools.mkdir" title="fstools.mkdir"><code class="xref py py-func docutils literal notranslate"><span class="pre">fstools.mkdir()</span></code></a></li>
- <li><a class="reference internal" href="#fstools.open_locked_blocking" title="fstools.open_locked_blocking"><code class="xref py py-func docutils literal notranslate"><span class="pre">fstools.open_locked_blocking()</span></code></a></li>
- <li><a class="reference internal" href="#fstools.open_locked_non_blocking" title="fstools.open_locked_non_blocking"><code class="xref py py-func docutils literal notranslate"><span class="pre">fstools.open_locked_non_blocking()</span></code></a></li>
- <li><a class="reference internal" href="#fstools.uid" title="fstools.uid"><code class="xref py py-func docutils literal notranslate"><span class="pre">fstools.uid()</span></code></a></li>
- </ul>
- <p><strong>Unittest:</strong></p>
- <blockquote>
- <div>See also the <a class="reference download internal" download="" href="_downloads/7bf10188aa659556c284b4a8298dba8d/unittest.pdf"><code class="xref download docutils literal notranslate"><span class="pre">unittest</span></code></a> documentation.</div></blockquote>
- <p><strong>Module Documentation:</strong></p>
- <dl class="function">
- <dt id="fstools.dirlist">
- <code class="descclassname">fstools.</code><code class="descname">dirlist</code><span class="sig-paren">(</span><em>path='.'</em>, <em>rekursive=True</em><span class="sig-paren">)</span><a class="headerlink" href="#fstools.dirlist" title="Permalink to this definition">¶</a></dt>
- <dd><p>Function returning a list of directories below a given path.</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>path</strong> (<em>str</em>) – folder which is the basepath for searching files.</li>
- <li><strong>rekursive</strong> (<em>bool</em>) – search all subfolders if True.</li>
- </ul>
- </td>
- </tr>
- <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">list of filenames including the pathe</p>
- </td>
- </tr>
- <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">list</p>
- </td>
- </tr>
- </tbody>
- </table>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">The returned filenames could be relative pathes depending on argument path.</p>
- </div>
- <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="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">fstools</span>
-
-
- <span class="k">for</span> <span class="n">dirname</span> <span class="ow">in</span> <span class="n">fstools</span><span class="o">.</span><span class="n">dirlist</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">'..'</span><span class="p">,</span> <span class="n">rekursive</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
- <span class="nb">print</span><span class="p">(</span><span class="n">dirname</span><span class="p">)</span>
- </pre></div>
- </div>
- <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">../</span><span class="n">_examples_</span>
- <span class="o">../</span><span class="n">__pycache__</span>
- <span class="o">../</span><span class="n">_testresults_</span>
- <span class="o">../</span><span class="n">_docs_</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_static</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_static</span><span class="o">/</span><span class="n">fonts</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_static</span><span class="o">/</span><span class="n">fonts</span><span class="o">/</span><span class="n">Lato</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_static</span><span class="o">/</span><span class="n">fonts</span><span class="o">/</span><span class="n">RobotoSlab</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_static</span><span class="o">/</span><span class="n">js</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_static</span><span class="o">/</span><span class="n">css</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_static</span><span class="o">/</span><span class="n">css</span><span class="o">/</span><span class="n">fonts</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_sources</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_downloads</span>
- <span class="o">../</span><span class="n">_docs_</span><span class="o">/</span><span class="n">_downloads</span><span class="o">/</span><span class="mi">7</span><span class="n">bf10188aa659556c284b4a8298dba8d</span>
- </pre></div>
- </div>
- </dd></dl>
-
- <dl class="function">
- <dt id="fstools.filelist">
- <code class="descclassname">fstools.</code><code class="descname">filelist</code><span class="sig-paren">(</span><em>path='.'</em>, <em>expression='*'</em>, <em>rekursive=True</em><span class="sig-paren">)</span><a class="headerlink" href="#fstools.filelist" title="Permalink to this definition">¶</a></dt>
- <dd><p>Function returning a list of files below a given path.</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>path</strong> (<em>str</em>) – folder which is the basepath for searching files.</li>
- <li><strong>expression</strong> (<em>str</em>) – expression to fit including shell-style wildcards.</li>
- <li><strong>rekursive</strong> (<em>bool</em>) – search all subfolders if True.</li>
- </ul>
- </td>
- </tr>
- <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">list of filenames including the pathe</p>
- </td>
- </tr>
- <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">list</p>
- </td>
- </tr>
- </tbody>
- </table>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">The returned filenames could be relative pathes depending on argument path.</p>
- </div>
- <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="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">fstools</span>
-
-
- <span class="k">for</span> <span class="n">filename</span> <span class="ow">in</span> <span class="n">fstools</span><span class="o">.</span><span class="n">filelist</span><span class="p">(</span><span class="n">path</span><span class="o">=</span><span class="s1">'..'</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="s1">'*.py'</span><span class="p">,</span> <span class="n">rekursive</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
- <span class="nb">print</span><span class="p">(</span><span class="n">filename</span><span class="p">)</span>
- </pre></div>
- </div>
- <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">../</span><span class="fm">__init__</span><span class="o">.</span><span class="n">py</span>
- <span class="o">../</span><span class="n">_examples_</span><span class="o">/</span><span class="n">uid</span><span class="o">.</span><span class="n">py</span>
- <span class="o">../</span><span class="n">_examples_</span><span class="o">/</span><span class="n">is_writeable</span><span class="o">.</span><span class="n">py</span>
- <span class="o">../</span><span class="n">_examples_</span><span class="o">/</span><span class="n">uid_filelist</span><span class="o">.</span><span class="n">py</span>
- <span class="o">../</span><span class="n">_examples_</span><span class="o">/</span><span class="n">dirlist</span><span class="o">.</span><span class="n">py</span>
- <span class="o">../</span><span class="n">_examples_</span><span class="o">/</span><span class="n">filelist</span><span class="o">.</span><span class="n">py</span>
- </pre></div>
- </div>
- </dd></dl>
-
- <dl class="function">
- <dt id="fstools.is_writeable">
- <code class="descclassname">fstools.</code><code class="descname">is_writeable</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="headerlink" href="#fstools.is_writeable" title="Permalink to this definition">¶</a></dt>
- <dd><p>Method to get the Information, if a file or folder is writable.</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"><strong>path</strong> (<em>str</em>) – file or folder to check.</td>
- </tr>
- <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">Whether path is writable or not.</td>
- </tr>
- <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body">bool</td>
- </tr>
- </tbody>
- </table>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">If path does not exist, the return Value is <code class="xref py py-const docutils literal notranslate"><span class="pre">False</span></code>.</p>
- </div>
- <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="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">fstools</span>
-
-
- <span class="nb">print</span><span class="p">(</span><span class="n">fstools</span><span class="o">.</span><span class="n">is_writeable</span><span class="p">(</span><span class="s1">'..'</span><span class="p">))</span>
- <span class="nb">print</span><span class="p">(</span><span class="n">fstools</span><span class="o">.</span><span class="n">is_writeable</span><span class="p">(</span><span class="s1">'../__init__.py'</span><span class="p">))</span>
- </pre></div>
- </div>
- <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kc">True</span>
- <span class="kc">True</span>
- </pre></div>
- </div>
- </dd></dl>
-
- <dl class="function">
- <dt id="fstools.mkdir">
- <code class="descclassname">fstools.</code><code class="descname">mkdir</code><span class="sig-paren">(</span><em>path</em><span class="sig-paren">)</span><a class="headerlink" href="#fstools.mkdir" title="Permalink to this definition">¶</a></dt>
- <dd><p>Method to create a folder.</p>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">All needed subfoilders will also be created (rekursive mkdir).</p>
- </div>
- <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"><strong>path</strong> (<em>str</em>) – folder to be created.</td>
- </tr>
- <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">True, if folder exists after creation commands, otherwise False.</td>
- </tr>
- <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body">bool</td>
- </tr>
- </tbody>
- </table>
- </dd></dl>
-
- <dl class="function">
- <dt id="fstools.open_locked_blocking">
- <code class="descclassname">fstools.</code><code class="descname">open_locked_blocking</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#fstools.open_locked_blocking" title="Permalink to this definition">¶</a></dt>
- <dd><p>Method to get exclusive access to a 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>args</strong> – Arguments for a standard file open call.</li>
- <li><strong>kwargs</strong> – Keyword arguments for a standard file open call.</li>
- </ul>
- </td>
- </tr>
- <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">A file descriptor.</p>
- </td>
- </tr>
- <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">file handle</p>
- </td>
- </tr>
- </tbody>
- </table>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">The call blocks until file is able to be used. This can cause a deadlock, if the file release es done after trying to open the file!</p>
- </div>
- </dd></dl>
-
- <dl class="function">
- <dt id="fstools.open_locked_non_blocking">
- <code class="descclassname">fstools.</code><code class="descname">open_locked_non_blocking</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#fstools.open_locked_non_blocking" title="Permalink to this definition">¶</a></dt>
- <dd><p>Method to get exclusive access to a 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>args</strong> – Arguments for a standard file open call.</li>
- <li><strong>kwargs</strong> – Keyword arguments for a standard file open call.</li>
- </ul>
- </td>
- </tr>
- <tr class="field-even field"><th class="field-name">Raises:</th><td class="field-body"><p class="first">OSError, if the file is already blocked.</p>
- </td>
- </tr>
- <tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">A file descriptor.</p>
- </td>
- </tr>
- <tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">file handle</p>
- </td>
- </tr>
- </tbody>
- </table>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">The call blocks until file is able to be used. This can cause a deadlock, if the file release es done after trying to open the file!</p>
- </div>
- </dd></dl>
-
- <dl class="function">
- <dt id="fstools.uid">
- <code class="descclassname">fstools.</code><code class="descname">uid</code><span class="sig-paren">(</span><em>path</em>, <em>max_staleness=3600</em><span class="sig-paren">)</span><a class="headerlink" href="#fstools.uid" title="Permalink to this definition">¶</a></dt>
- <dd><p>Function returning a “unique” id for a given file or path.</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>path</strong> (<em>str</em>) – File or folder to generate a uid for.</li>
- <li><strong>max_staleness</strong> (<em>int</em>) – If a file or folder is older than that, we may consider
- it stale and return a different uid - this is a
- dirty trick to work around changes never being
- detected. Default is 3600 seconds, use None to
- disable this trickery. See below for more details.</li>
- </ul>
- </td>
- </tr>
- <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An object that changes value if the file changed,
- None is returned if there were problems accessing the file
- or folder.</p>
- </td>
- </tr>
- <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">str</p>
- </td>
- </tr>
- </tbody>
- </table>
- <div class="admonition warning">
- <p class="first admonition-title">Warning</p>
- <p class="last">Depending on the operating system capabilities and the way the
- file update is done, this function might return the same value
- even if the file has changed. It should be better than just
- using file’s mtime though.
- max_staleness tries to avoid the worst for these cases.</p>
- </div>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">If this function is used for a path, it will stat all pathes and files rekursively.</p>
- </div>
- <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="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">fstools</span>
-
-
- <span class="nb">print</span><span class="p">(</span><span class="n">fstools</span><span class="o">.</span><span class="n">uid</span><span class="p">(</span><span class="s1">'../__init__.py'</span><span class="p">))</span>
- </pre></div>
- </div>
- <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">950</span><span class="n">bd674ce9e6ccc93a3f450964b524412961e0d</span>
- </pre></div>
- </div>
- <p>Using just the file’s mtime to determine if the file has changed is
- not reliable - if file updates happen faster than the file system’s
- mtime granularity, then the modification is not detectable because
- the mtime is still the same.</p>
- <p>This function tries to improve by using not only the mtime, but also
- other metadata values like file size and inode to improve reliability.</p>
- <p>For the calculation of this value, we of course only want to use data
- that we can get rather fast, thus we use file metadata, not file data
- (file content).</p>
- </dd></dl>
-
- <dl class="function">
- <dt id="fstools.uid_filelist">
- <code class="descclassname">fstools.</code><code class="descname">uid_filelist</code><span class="sig-paren">(</span><em>path='.'</em>, <em>expression='*'</em>, <em>rekursive=True</em><span class="sig-paren">)</span><a class="headerlink" href="#fstools.uid_filelist" title="Permalink to this definition">¶</a></dt>
- <dd><p>Function returning a unique id for a given file or path.</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>path</strong> (<em>str</em>) – folder which is the basepath for searching files.</li>
- <li><strong>expression</strong> (<em>str</em>) – expression to fit including shell-style wildcards.</li>
- <li><strong>rekursive</strong> (<em>bool</em>) – search all subfolders if True.</li>
- </ul>
- </td>
- </tr>
- <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An object that changes value if one of the files change.</p>
- </td>
- </tr>
- <tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">str</p>
- </td>
- </tr>
- </tbody>
- </table>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">This UID is created out of the file content. Therefore it is more
- reliable then <a class="reference internal" href="#fstools.uid" title="fstools.uid"><code class="xref py py-func docutils literal notranslate"><span class="pre">fstools.uid()</span></code></a>, but also much slower.</p>
- </div>
- <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="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">fstools</span>
-
-
- <span class="nb">print</span><span class="p">(</span><span class="n">fstools</span><span class="o">.</span><span class="n">uid_filelist</span><span class="p">(</span><span class="s1">'..'</span><span class="p">,</span> <span class="s1">'*.py'</span><span class="p">,</span> <span class="n">rekursive</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
- </pre></div>
- </div>
- <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">32</span><span class="n">ca1c130dfa068b79f4e96071c46448</span>
- </pre></div>
- </div>
- </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>
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