[3.13] DOCS: Suggest always calling exec with a globals argument and no locals argument (GH-119235) #119239
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…ls argument (pythonGH-119235) Many users think they want a locals argument for various reasons but they do not understand that it makes code be treated as a class definition. They do not want their code treated as a class definition and get surprised. The reason not to pass locals specifically is that the following code raises a `NameError`: ```py exec(""" def f(): print("hi") f() def g(): f() g() """, {}, {}) ``` The reason not to leave out globals is as follows: ```py def t(): exec(""" def f(): print("hi") f() def g(): f() g() """) ``` (cherry picked from commit 7e1a130) Co-authored-by: Hood Chatham <roberthoodchatham@gmail.com>
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Many users think they want a locals argument for various reasons but they do not
understand that it makes code be treated as a class definition. They do not want
their code treated as a class definition and get surprised. The reason not
to pass locals specifically is that the following code raises a
NameError:The reason not to leave out globals is as follows:
(cherry picked from commit 7e1a130)
Co-authored-by: Hood Chatham roberthoodchatham@gmail.com
📚 Documentation preview 📚: https://cpython-previews--119239.org.readthedocs.build/