python 内置错误类型 Built-in Exceptions

 BaseException
  +-- SystemExit
  +-- KeyboardInterrupt
  +-- GeneratorExit
  +-- Exception
       +-- StopIteration
       +-- ArithmeticError
       |    +-- FloatingPointError
       |    +-- OverflowError
       |    +-- ZeroDivisionError
       +-- AssertionError
       +-- AttributeError
       +-- BufferError
       +-- EOFError
       +-- ImportError
       +-- LookupError
       |    +-- IndexError
       |    +-- KeyError
       +-- MemoryError
       +-- NameError
       |    +-- UnboundLocalError
       +-- OSError
       |    +-- BlockingIOError
       |    +-- ChildProcessError
       |    +-- ConnectionError
       |    |    +-- BrokenPipeError
       |    |    +-- ConnectionAbortedError
       |    |    +-- ConnectionRefusedError
       |    |    +-- ConnectionResetError
       |    +-- FileExistsError
       |    +-- FileNotFoundError
       |    +-- InterruptedError
       |    +-- IsADirectoryError
       |    +-- NotADirectoryError
       |    +-- PermissionError
       |    +-- ProcessLookupError
       |    +-- TimeoutError
       +-- ReferenceError
       +-- RuntimeError
       |    +-- NotImplementedError
       +-- SyntaxError
       |    +-- IndentationError
       |         +-- TabError
       +-- SystemError
       +-- TypeError
       +-- ValueError
       |    +-- UnicodeError
       |         +-- UnicodeDecodeError
       |         +-- UnicodeEncodeError
       |         +-- UnicodeTranslateError
       +-- Warning
            +-- DeprecationWarning
            +-- PendingDeprecationWarning
            +-- RuntimeWarning
            +-- SyntaxWarning
            +-- UserWarning
            +-- FutureWarning
            +-- ImportWarning
            +-- UnicodeWarning
            +-- BytesWarning
            +-- ResourceWarning

https://docs.python.org/3.4/library/exceptions.html