Bug 1269952 - python scripts using #!/usr/bin/env python shebang will be affected by python3 default interpreter in Fedora 23.
python scripts using #!/usr/bin/env python shebang will be affected by pytho...
Product: Fedora
Classification: Fedora
Component: python3 (Show other bugs)
All Linux
unspecified Severity urgent
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Assigned To: Charalampos Stratakis
Fedora Extras Quality Assurance
Depends On:
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Reported: 2015-10-08 10:51 EDT by Goutam Kodu
Modified: 2016-02-01 03:46 EST (History)
7 users (show)

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Doc Type: Bug Fix
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Last Closed: 2016-02-01 03:46:27 EST
Type: Bug
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Description Goutam Kodu 2015-10-08 10:51:24 EDT
Description of problem:
Python scripts have #!/usr/bin/env python will fail to execute in Fedora 23

Version-Release number of selected component (if applicable):

How reproducible:
Run  /usr/bin/env python in terminal

Steps to Reproduce:

Actual results:
python file not found.

Expected results:
The script should run irrespective of python3 being the default interpreter

Additional info:
This would affect the software supporting both py2.X and py3.X versions.
Comment 1 Goutam Kodu 2015-10-11 23:03:00 EDT

Can somebody update what is the resolution for this bug ?
Will there be python file soft linked to python3 ?

Comment 2 Petr Viktorin 2015-10-12 05:21:21 EDT
The current upstream recommendation is that "python" should mean Python 2 (see [PEP 394]). As with any script, you need to install the interpreter that can run it – in this case, Python 2.

Alternatively, you can change the shebang to "#!/usr/bin/env python3".

A shebang that would somehow automatically choose between py2 and py3 is being discussed upstream: https://mail.python.org/pipermail/linux-sig/2015-October/000000.html

[PEP 394]: https://www.python.org/dev/peps/pep-0394/
Comment 3 Fedora Admin XMLRPC Client 2016-01-29 08:08:30 EST
This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.
Comment 4 Petr Viktorin 2016-01-29 08:36:30 EST
Hello Goutam,
Did that answer your question, or do you need any more info?
Comment 5 Goutam Kodu 2016-01-31 21:13:10 EST
Yes Petr that answered my question. Sorry for delay in my response.
We updated the code with "#!/usr/bin/env python3" shebang

Comment 6 Petr Viktorin 2016-02-01 03:46:27 EST
Thanks for the reply. I'll close the bug, but get in touch if anything else is unclear.

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