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gh-99139: Improve NameError error suggestion for instances (#99140)

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Pablo Galindo Salgado 2022-11-06 13:52:06 +00:00 • committed by GitHub
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Doc/whatsnew/3.12.rst
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@ -75,6 +75,27 @@ Important deprecations, removals or restrictions:
Improved Error Messages
=======================
* Improve the error suggestion for :exc:`NameError` exceptions for instances.
Now if a :exc:`NameError` is raised in a method and the instance has an
attribute that's exactly equal to the name in the exception, the suggestion
will include ``self.<NAME>`` instead of the closest match in the method
scope. Contributed by Pablo Galindo in :gh:`99139`.
>>> class A:
... def __init__(self):
... self.blech = 1
...
... def foo(self):
... somethin = blech
>>> A().foo()
Traceback (most recent call last):
File "<stdin>", line 1
somethin = blech
^^^^^
NameError: name 'blech' is not defined. Did you mean: 'self.blech'?
* Improve the :exc:`SyntaxError` error message when the user types ``import x
from y`` instead of ``from y import x``. Contributed by Pablo Galindo in :gh:`98931`.