8000 Doc: Prettier exception hierarchy. (GH-26533) · python/cpython@c4955e2 · GitHub
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Doc: Prettier exception hierarchy. (GH-26533)
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‎Doc/library/exceptions.rst

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@@ -821,3 +821,4 @@ Exception hierarchy
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The class hierarchy for built-in exceptions is:
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.. literalinclude:: ../../Lib/test/exception_hierarchy.txt
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:language: text

‎Lib/test/exception_hierarchy.txt

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

‎Lib/test/test_baseexception.py

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@@ -44,7 +44,7 @@ def test_inheritance(self):
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last_depth = 0
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for exc_line in inheritance_tree:
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exc_line = exc_line.rstrip()
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depth = exc_line.rindex('-')
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depth = exc_line.rindex('─')
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exc_name = exc_line[depth+2:] # Slice past space
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if '(' in exc_name:
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paren_index = exc_name.index('(')

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