examples adapted for unittest structure

_examples_/Makefile

@@ -0,0 +1,29 @@
+# pylibs examples Makefile: Version 1.0 (2025-08-15)
+
+.ONESHELL:
+SHELL = /usr/bin/bash
+MAKEFLAGS += --no-print-directory
+.SILENT:
+
+INTERPRETER = python3
+
+.PHONY: all
+EXAMPLES := $(wildcard *.py)
+EXAMPLES := $(filter-out config.py, $(EXAMPLES))
+LOGFILES := ${EXAMPLES:.py=.log}
+LOGFILES_1st := ${EXAMPLES:.py=.log_1st}
+
+all: $(LOGFILES)
+
+-include __make.d__/*.mk
+
+%.log: %.py
+	$(MAKE) $@_1st 2> /dev/null
+	echo -e "\e[1m  * Running example $<\e[0m"
+	$(INTERPRETER) $< > $@
+
+localclean:
+clean: localclean
+	echo -e "\e[1m  * Example logs...\e[0m"
+	rm -f $(LOGFILES)
+	rm -f $(LOGFILES_1st)

_examples_/mqtt

@@ -1 +0,0 @@
-..

_examples_/test.py

@@ -1,7 +1,9 @@
+import sys                  # nopep8
+sys.path.append("../..")    # nopep8
+
 import mqtt
 import time
 import logging
-import sys
 
 root = logging.getLogger('root')
 root.setLevel(logging.DEBUG)
@@ -18,4 +20,4 @@ def print_msg(client, userdata, message):
 c = mqtt.mqtt_client('test', '192.168.0.2', username='', password='')
 c.add_callback('ambient/#', print_msg)
 while True:
-    time.sleep(1)
+    time.sleep(1)