Add comment to subtle dataclass code#96133
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In the PR that made this change, 1st1 left a "note to self: add a comment explaining this". This comment was never added. https://github.com/python/cpython/pull/9518/files#r280608117 I was reading this code and it wasn't obvious to me why we weren't exec-ing directly into locals. So I got to learn something new :-) https://docs.python.org/3/reference/executionmodel.html#interaction-with-dynamic-features
ericvsmith
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Aug 20, 2022
| # Free variables in exec are resolved in the global namespace. | ||
| # The global namespace we have is user-provided, so we can't modify it for | ||
| # our purposes. So we put the things we need into locals and introduce a | ||
| # scope to allow the function we're creating to close over them. |
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This looks reasonable to me, but I'll wait to hear from @1st1
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In the PR that made this change, 1st1 left a "note to self: add a
comment explaining this". This comment was never added.
https://github.com/python/cpython/pull/9518/files#r280608117
I was reading this code and it wasn't obvious to me why we weren't
exec-ing directly into locals. So I got to learn something new :-)
https://docs.python.org/3/reference/executionmodel.html#interaction-with-dynamic-features