python常见的错误类型和继承关系

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The class hierarchy for built-in exceptions is:

BaseException +-- SystemExit +-- KeyboardInterrupt +-- GeneratorExit +-- Exception      +-- StopIteration      +-- StandardError      |    +-- BufferError      |    +-- ArithmeticError      |    |    +-- FloatingPointError      |    |    +-- OverflowError      |    |    +-- ZeroDivisionError      |    +-- AssertionError      |    +-- AttributeError      |    +-- EnvironmentError      |    |    +-- IOError      |    |    +-- OSError      |    |         +-- WindowsError (Windows)      |    |         +-- VMSError (VMS)      |    +-- EOFError      |    +-- ImportError      |    +-- LookupError      |    |    +-- IndexError      |    |    +-- KeyError      |    +-- MemoryError      |    +-- NameError      |    |    +-- UnboundLocalError      |    +-- ReferenceError      |    +-- RuntimeError      |    |    +-- NotImplementedError      |    +-- SyntaxError      |    |    +-- IndentationError      |    |         +-- TabError      |    +-- SystemError      |    +-- TypeError      |    +-- ValueError      |         +-- UnicodeError      |              +-- UnicodeDecodeError      |              +-- UnicodeEncodeError      |              +-- UnicodeTranslateError      +-- Warning           +-- DeprecationWarning           +-- PendingDeprecationWarning           +-- RuntimeWarning           +-- SyntaxWarning           +-- UserWarning           +-- FutureWarning   +-- ImportWarning   +-- UnicodeWarning   +-- BytesWarning

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