exception handling in python code example

Example 1: python exception list

AssertionError			#Raised when assert statement fails.
AttributeError			#Raised when attribute assignment or reference fails.
EOFError				#Raised when the input() functions hits end-of-file condition.
FloatingPointError		#Raised when a floating point operation fails.
GeneratorExit			#Raise when a generator's close() method is called.
ImportError				#Raised when the imported module is not found.
IndexError				#Raised when index of a sequence is out of range.
KeyError				#Raised when a key is not found in a dictionary.
KeyboardInterrupt		#Raised when the user hits interrupt key (Ctrl+c or delete).
MemoryError				#Raised when an operation runs out of memory.
NameError				#Raised when a variable is not found in local or global scope.
NotImplementedError		#Raised by abstract methods.
OSError					#Raised when system operation causes system related error.
OverflowError			#Raised when result of an arithmetic operation is too large to be represented.
ReferenceError			#Raised when a weak reference proxy is used to access a garbage collected referent.
RuntimeError			#Raised when an error does not fall under any other category.
StopIteration			#Raised by next() function to indicate that there is no further item to be returned by iterator.
SyntaxError				#Raised by parser when syntax error is encountered.
IndentationError		#Raised when there is incorrect indentation.
TabError				#Raised when indentation consists of inconsistent tabs and spaces.
SystemError				#Raised when interpreter detects internal error.
SystemExit				#Raised by sys.exit() function.
TypeError				#Raised when a function or operation is applied to an object of incorrect type.
UnboundLocalError		#Raised when a reference is made to a local variable in a function or method, but no value has been bound to that variable.
UnicodeError			#Raised when a Unicode-related encoding or decoding error occurs.
UnicodeEncodeError		#Raised when a Unicode-related error occurs during encoding.
UnicodeDecodeError		#Raised when a Unicode-related error occurs during decoding.
UnicodeTranslateError	#Raised when a Unicode-related error occurs during translating.
ValueError				#Raised when a function gets argument of correct type but improper value.
ZeroDivisionError		#Raised when second operand of division or modulo operation is zero.

Example 2: how to print error in try except python

try:
  # some code
except Exception as e:
	print("ERROR : "+str(e))

Example 3: throwing an exception python

raise Exception("message")

Example 4: python except pass

try:
   # Code to test / execute
   print('Test')
except (SyntaxError, IndexError) as E:  # specific exceptions
   # Code in case of SyntaxError for example
   print('Synthax or index error !')
except :
   # Code for any other exception
   print('Other error !')
else:
   # Code if no exception caught
   print('No error')
finally:
   # Code executed after try block (success) or any exception (ie everytime)
   print('Done')

# This code is out of try / catch bloc
print('Anything else')

Example 5: exception pyton print

except Exception as e: print(e)

Example 6: python try catch

try:
  # Dangerous stuff
except ValueError:
  # If you use try, at least 1 except block is mandatory!
  # Handle it somehow / ignore
except (BadThingError, HorrbileThingError) as e:
  # Hande it differently
except:
  # This will catch every exception.
else:
  # Else block is not mandatory.
  # Dangerous stuff ended with no exception
finally:
  # Finally block is not mandatory.
  # This will ALWAYS happen after the above blocks.

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