gh-118908: Use __main__ for the default PyREPL namespace #121054
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This allows for PYTHONSTARTUP to execute in the right namespace.
ambv
commented
Jun 26, 2024
| import tokenize | ||
| with tokenize.open(startup_path) as f: | ||
| startup_code = compile(f.read(), startup_path, "exec") | ||
| exec(startup_code, namespace) |
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Note: manual PYTHONSTARTUP also executes in our custom namespace, otherwise it doesn't work. That's why namespace extraction from the optional mainmodule passed happens here already.
ambv
commented
Jun 26, 2024
| # if `__main__` is a cached .pyc file but there's no .py source file | ||
| case4 = f"{pre}, '__cached__', '__doc__', {post}" in output | ||
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| self.assertTrue(case1 or case2 or case3 or case4, output) |
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LMK if you know a more elegant solution for "one of these needs to pass".
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I guess this is what I would have done, but I like yours better.
cases = [
f"{pre}, '__doc__', {post}", # if `__main__` is not a file (impossible with pyrepl)
...
]
self.assertTrue(any(case in output for case in cases), output)
lysnikolaou
reviewed
Jun 26, 2024
| # if `__main__` is a cached .pyc file but there's no .py source file | ||
| case4 = f"{pre}, '__cached__', '__doc__', {post}" in output | ||
|
|
||
| self.assertTrue(case1 or case2 or case3 or case4, output) |
There was a problem hiding this comment.
I guess this is what I would have done, but I like yours better.
cases = [
f"{pre}, '__doc__', {post}", # if `__main__` is not a file (impossible with pyrepl)
...
]
self.assertTrue(any(case in output for case in cases), output)
lysnikolaou
added
needs backport to 3.13
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Thanks @ambv for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13. |
miss-islington
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Jun 26, 2024
…nGH-121054) (cherry picked from commit d611c4c) Co-authored-by: Łukasz Langa <[email protected]>
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GH-121059 is a backport of this pull request to the 3.13 branch. |
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This allows for PYTHONSTARTUP to execute in the same namespace that the interpreter later operates in.
Looks like Eugene was right in his initial implementation of the fix. We can't create a synthetic namespace because then
Modules/main.c:pymain_run_startupis running in a namespace that isn't used later. There's probably more edge cases that using a synthetic namespace created; in Python__main__is clearly expected as the namespace for interaction.Since
-iexposes a different module as__main__, I see no reason why regular REPL execution shouldn't expose__file__pointing at_pyrepl.__main__. Therefore, I adapted the test.