8000 [3.12] gh-117597: Clarify exception handling in the tutorial (GH-117681) by miss-islington · Pull Request #117700 · python/cpython · GitHub
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[3.12] gh-117597: Clarify exception handling in the tutorial (GH-117681) #117700

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Apr 9, 2024
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[3.12] gh-117597: Clarify exception handling in the tutorial (GH-117681) #117700

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6 changes: 3 additions & 3 deletions Doc/tutorial/errors.rst
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Expand Up @@ -119,9 +119,9 @@ may name multiple exceptions as a parenthesized tuple, for example::
... except (RuntimeError, TypeError, NameError):
... pass

A class in an :keyword:`except` clause is compatible with an exception if it is
the same class or a base class thereof (but not the other way around --- an
*except clause* listing a derived class is not compatible with a base class).
A class in an :keyword:`except` clause matches exceptions which are instances of the
class itself or one of its derived classes (but not the other way around --- an
*except clause* listing a derived class does not match instances of its base classes).
For example, the following code will print B, C, D in that order::

class B(Exception):
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