Exceptions in Python


Exceptions
                                    
Python Built-in Exceptions
Exception
Cause of Error
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.

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