exceptions 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 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.
Example 5: python exception
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 6: raise python
# Raise is used to cause an error
raise(Exception("Put whatever you want here!"))
raise(TypeError)