pythonの組み込み例外一覧を取得する方法

ステップ1: 次のようなpythonファイルを作成する。

print_exc_tree.py

from __future__ import print_function
import platform


def classtree(cls, depth=0):
    if depth == 0:
        prefix = ''
    else:
        prefix = '.' * (depth * 3) + ' '
    if cls.__name__.lower() == 'error':
        print('{0}{1} ({2})'.format(prefix, cls.__name__, cls))
    else:
        print('{0}{1}'.format(prefix, cls.__name__))
    for subcls in sorted(cls.__subclasses__(), key=lambda c: c.__name__):
        classtree(subcls, depth+1)


if __name__ == '__main__':
    print('Python Version: {0}'.format(platform.python_version()))
    print()
    classtree(BaseException)

ステップ2:
上記のpythonファイルを作成したら、コマンドプロンプトに次のコードを入力する。

python  print_exc_tree.py

ステップ3:
次のようにpythonの組み込み例外の一覧を取得することができる。

Python Version: 3.7.4

BaseException
... Exception
...... ArithmeticError
......... FloatingPointError
......... OverflowError
......... ZeroDivisionError
...... AssertionError
...... AttributeError
...... BufferError
...... EOFError
...... Error (<class 'locale.Error'>)
...... ImportError
......... ModuleNotFoundError
......... ZipImportError
...... LookupError
......... CodecRegistryError
......... IndexError
......... KeyError
...... MemoryError
...... NameError
......... UnboundLocalError
...... OSError
......... BlockingIOError
......... ChildProcessError
......... ConnectionError
............ BrokenPipeError
............ ConnectionAbortedError
............ ConnectionRefusedError
............ ConnectionResetError
......... FileExistsError
......... FileNotFoundError
......... InterruptedError
......... IsADirectoryError
......... NotADirectoryError
......... PermissionError
......... ProcessLookupError
......... TimeoutError
......... UnsupportedOperation
...... ReferenceError
...... RuntimeError
......... BrokenBarrierError
......... NotImplementedError
......... RecursionError
......... _DeadlockError
...... StopAsyncIteration
...... StopIteration
...... StopTokenizing
...... SubprocessError
......... CalledProcessError
......... TimeoutExpired
...... SyntaxError
......... IndentationError
............ TabError
...... SystemError
......... CodecRegistryError
...... TokenError
...... TypeError
...... ValueError
......... UnicodeError
............ UnicodeDecodeError
............ UnicodeEncodeError
............ UnicodeTranslateError
......... UnsupportedOperation
...... Verbose
...... Warning
......... BytesWarning
......... DeprecationWarning
......... FutureWarning
......... ImportWarning
......... PendingDeprecationWarning
......... ResourceWarning
......... RuntimeWarning
......... SyntaxWarning
......... UnicodeWarning
......... UserWarning
...... _OptionError
...... error (<class 're.error'>)
... GeneratorExit
... KeyboardInterrupt
... SystemExit