Bug 1269952

Summary:	python scripts using #!/usr/bin/env python shebang will be affected by python3 default interpreter in Fedora 23.
Product:	[Fedora] Fedora	Reporter:	Goutam Kodu <goutamkk>
Component:	python3	Assignee:	Charalampos Stratakis <cstratak>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	23	CC:	bkabrda, gaurav.sood, goutamkk, jberan, pviktori, rkuska, tomspur
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-02-01 08:46:27 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Goutam Kodu 2015-10-08 14:51:24 UTC

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):
python3

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

Steps to Reproduce:
1.
2.
3.

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 2015-10-12 03:03:00 UTC

Hi,

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

Thanks,
Goutam

Comment 2 Petr Viktorin (pviktori) 2015-10-12 09:21:21 UTC

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 13:08:30 UTC

This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.

Comment 4 Petr Viktorin (pviktori) 2016-01-29 13:36:30 UTC

Hello Goutam,
Did that answer your question, or do you need any more info?

Comment 5 Goutam Kodu 2016-02-01 02:13:10 UTC

Yes Petr that answered my question. Sorry for delay in my response.
We updated the code with "#!/usr/bin/env python3" shebang

thanks,
Goutam

Comment 6 Petr Viktorin (pviktori) 2016-02-01 08:46:27 UTC

Thanks for the reply. I'll close the bug, but get in touch if anything else is unclear.