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Regression: Importing __hello__ doesn't print "Hello world!" #100136
Description
Activity
The behavior was intentionally changed by issue #89182 and pull request #28374. __hello__ and __phello__.spam still print to sys.stdout when run as scripts. When imported, main() has to be called. For example:
>>> import __hello__ >>> __hello__.main() Hello world! >>> import __phello__.spam >>> __phello__.main() Hello world! >>> __phello__.spam.main() Hello world!
Okay, thanks.
I saw the old, short and simple version on a list of Python Easter eggs:
https://github.com/OrkoHunter/python-easter-eggs
And searching for Python Easter eggs it often shows up as the first one such as 'The Easiest “Hello World”':
- https://towardsdatascience.com/7-easter-eggs-in-python-7765dc15a203
- https://www.geeksforgeeks.org/top-5-easter-eggs-in-python/
- https://nolowiz.com/10-easter-eggs-in-python/
- https://blog.finxter.com/the-6-best-python-easter-eggs/
- https://www.alanzucconi.com/2015/10/29/the-top-5-easter-eggs-in-python/
- https://www.folkstalk.com/2022/10/python-easter-eggs-with-code-examples.html
It's less exciting in the new form.
But fine by me if you'd like to close this as correct behaviour.
At least import this still prints the text of "The Zen of Python".
Reacted by Hugo van Kemenade and Kirill PodoprigoraHow badly would it break the tests that depend on __hello__ to also call main() if sys.ps1 has a value? Is it worth saving the easter egg? :)
Bug report
Importing __hello__ or __phello__ on Python 3.7-3.10 prints "Hello world!"
Importing __hello__ or __phello__ on Python 3.11-3.12 prints nothing.
And at least as early as 3.11.0a2:
(I couldn't build 3.11.0a1)
Your environment