Python: Exceptions, Assert, Logging (AtBSwP)

Author: bluemyria

.gitignore

@@ -27,9 +27,17 @@ epi_judge_java/java_build/
 /bluemyria_notes/ra/.vscode
 /bluemyria_notes/ra/venv
 
+# /bluemyria_notes/comp_progr/
+
 /bluemyria_notes/comp_progr/*/*.cpp
 /bluemyria_notes/comp_progr/*/*.java
 /bluemyria_notes/comp_progr/*/*.py2
+/bluemyria_notes/comp_progr/*/*.py3
+/bluemyria_notes/comp_progr/*/*.py
 
 /bluemyria_notes/ra/*.png
 
+
+
+bluemyria_notes/PythonAutom/error_log.txt
+bluemyria_notes/PythonAutom/examplePhoneEmailDirectory.pdf

bluemyria_notes/PythonAutom/except_assert.py

@@ -0,0 +1,52 @@
+import os
+import traceback
+
+#################################################
+# EXCEPTIONS & TRACEBACK
+#################################################
+def boxPrint(symbol, width, height):
+    
+    try:
+        if len(symbol) != 1:
+            raise Exception('"symbol" must be a string of length 1')
+        if width < 3 or height < 3:
+            raise Exception('"width" and "height" must be greater than 2')
+    except:
+        errorFile = open('error_log.txt', 'a')
+        errorFile.write(traceback.format_exc())
+        errorFile.close()
+        print('the traceback was written in error_log.txt')
+    print(symbol * width)
+
+    for _ in range(height - 2):
+        print(symbol + (' ' * (width - 2)) + symbol )
+
+    print(symbol * width)
+
+boxPrint('&', 15, 8)
+boxPrint('O', 5, 20)
+boxPrint('**', 5, 20)
+boxPrint('*', 2, 20)
+boxPrint('*', 3, 2)
+
+#################################################
+# ASSERTIONS
+#################################################
+
+market_2nd = {'ns': 'green', 'ew':'red'}
+
+def switchLights(intersection):
+    for key in intersection.keys():
+        if intersection[key] == 'green':
+            intersection[key] = 'yellow'
+        elif intersection[key] == 'yellow':
+            intersection[key] = 'red'
+        elif intersection[key] == 'red':
+            intersection[key] = 'green'
+    assert 'red' in intersection.values(), 'Neither light is red!' + str(intersection)
+
+print(market_2nd)
+switchLights(market_2nd)
+print(market_2nd)
+
+

bluemyria_notes/PythonAutom/logging_test.py

@@ -0,0 +1,24 @@
+import logging
+logging.basicConfig(level=logging.DEBUG, format='%(asctime)s - %(levelname)s - %(message)s')
+# LOG in FILE
+# logging.basicConfig(filename='myLog.txt', level=logging.DEBUG, format='%(asctime)s - %(levelname)s - %(message)s')
+
+# DEBUG, INFO, WARNING, ERROR, CRITICAL
+#logging.disable(logging.CRITICAL)
+
+logging.debug('Start of program')
+def factorial(n):
+    logging.debug(f'Start of factorial {n}')
+
+    total = 1
+    for i in range(1, n+1):
+
+        total *= i
+        logging.debug(f'i is {i}, total is {total}')
+    
+    logging.debug(f'Return value is {total}')
+    return total
+
+print(factorial(5))
+
+logging.debug('End of program')