python 内置错误和异常（笔记）

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异常层级显示
内置异常层级为：BaseException +-- SystemExit +-- KeyboardInterrupt +-- GeneratorExit +-- Exception      +-- StopIteration      +-- StopAsyncIteration      +-- 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      |    +-- RecursionError      +-- SyntaxError      |    +-- IndentationError      |         +-- TabError      +-- SystemError      +-- TypeError      +-- ValueError      |    +-- UnicodeError      |         +-- UnicodeDecodeError      |         +-- UnicodeEncodeError      |         +-- UnicodeTranslateError      +-- Warning           +-- DeprecationWarning           +-- PendingDeprecationWarning           +-- RuntimeWarning           +-- SyntaxWarning           +-- UserWarning           +-- FutureWarning           +-- ImportWarning           +-- UnicodeWarning           +-- BytesWarning           +-- ResourceWarning异常具体说明：https://docs.python.org/3/library/exceptions.html#bltin-exceptions
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