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--- notes:python_cheat_sheet [2026/11/02 00:44]
108.246.45.155 old revision restored (2026/10/27 12:01)
+++ notes:python_cheat_sheet [2026/11/03 03:29] (current)
101.166.17.61 old revision restored (2026/08/03 07:52)
@@ Line 108: / Line 108: @@
   * Syntax errors are parsing errors, exceptions are runtime errors.
   * Exceptions are class objects in the exceptions module. [[http://docs.python.org/3.1/library/exceptions.html#bltin-exceptions | List of builtin exceptions]].
-  * Exception handling is supported using try..except..else..finally :<code python>
+  * Exception handling is supported using try..except..else..finally :
+<code python>
 try:
-    result = x / y
+   result = x / y
 except ZeroDivisionError:
-    print("division by zero!")
+   print("division by zero!")
 except Exception as inst:
-    print(type(inst))    # the exception instance
+   print(type(inst))    # the exception instance
-    print(inst.args)     # arguments stored in .args
+   print(inst.args)     # arguments stored in .args
-    print(inst)          # also prints .args
+   print(inst)          # also prints .args
 else:
-    print("result is", result)
+   print("result is", result)
 finally:
-    print("executing finally clause")
+   print("executing finally clause")
-</code>
-  * Errors can be raised using ''raise Exception('mine')'' or just ''raise'' in an exception handler.
-  * New exception classes can be created and should derive from the Exception class.
-  * ''with'' can be used to automatically call the cleanup actions of an object e.g. <code python>
-with open("myfile.txt") as f:
-    for line in f:
-        print(line)
 </code>
+  * Errors can be raised using <code python>raise Exception('mine')</code> or just <code python>raise</code> in an exception handler.
+  *

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