Message 355088 - Python tracker

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Author	ammar2
Recipients	Michel Desmoulin, ammar2, ncoghlan, r.david.murray, vstinner, xtreak, yselivanov
Date	2019-10-21.17:44:21
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1571679861.38.0.760511700453.issue20443@roundup.psfhosted.org>
In-reply-to

Content
I did a quick search to see what code would break from sys.argv[0] going relative intext:"sys.argv[0]" ext:py site:github.com https://www.google.com/search?q=intext:"sys.argv%5B0%5D"+ext:py+site:github.com and while most uses of it are to print usage messages. There is potentially code relying on it being a relative path that will break from this change: * https://github.com/google/python-gflags/blob/4f06c3d0d6cbe9b1fb90ee9fb1c082b3bf9285f6/gflags/flagvalues.py#L868-L869 * https://github.com/HcashOrg/hcOmniEngine/blob/f1acc2ba3640a8e1c651ddc90a86d569d00704fe/msc-cli.py#L12 * https://github.com/vmtk/vmtk/blob/64675f598e31bc6be3d4fba903fb59bf1394f492/PypeS/pyperun.py#L35 * https://github.com/apache/lucene-solr/blob/cfa49401671b5f9958d46c04120df8c7e3f358be/dev-tools/scripts/svnBranchToGit.py#L783 I think Michel and Nick are correct here and the status-quo should be maintained for sys.argv[0]. Michel should not have to enumerate the use cases for a relative sys.argv[0].

I did a quick search to see what code would break from sys.argv[0] going relative

  intext:"sys.argv[0]" ext:py site:github.com
  https://www.google.com/search?q=intext:"sys.argv%5B0%5D"+ext:py+site:github.com

and while most uses of it are to print usage messages. There is potentially code relying on it being a relative path that will break from this change:

* https://github.com/google/python-gflags/blob/4f06c3d0d6cbe9b1fb90ee9fb1c082b3bf9285f6/gflags/flagvalues.py#L868-L869
* https://github.com/HcashOrg/hcOmniEngine/blob/f1acc2ba3640a8e1c651ddc90a86d569d00704fe/msc-cli.py#L12
* https://github.com/vmtk/vmtk/blob/64675f598e31bc6be3d4fba903fb59bf1394f492/PypeS/pyperun.py#L35
* https://github.com/apache/lucene-solr/blob/cfa49401671b5f9958d46c04120df8c7e3f358be/dev-tools/scripts/svnBranchToGit.py#L783

I think Michel and Nick are correct here and the status-quo should be maintained for sys.argv[0]. Michel should not have to enumerate the use cases for a relative sys.argv[0].

History
Date	User	Action	Args
2019-10-21 17:44:21	ammar2	set	recipients: + ammar2, ncoghlan, vstinner, r.david.murray, yselivanov, Michel Desmoulin, xtreak
2019-10-21 17:44:21	ammar2	set	messageid: <1571679861.38.0.760511700453.issue20443@roundup.psfhosted.org>
2019-10-21 17:44:21	ammar2	link	issue20443 messages
2019-10-21 17:44:21	ammar2	create