New submission from Malcolm Smith <malcolm.sm...@gmail.com>:
The `site` module documentation says that in .pth files, "Blank lines and lines beginning with # are skipped.". However, the implementation does not actually skip blank lines. It then joins the empty string to the site-packages directory, resulting in the site-packages directory being added to sys.path a second time. Example: $ python -c 'import sys; print(sys.path)' ['', '/home/smith/.virtualenvs/foo/lib/python36.zip', '/home/smith/.virtualenvs/foo/lib/python3.6', '/home/smith/.virtualenvs/foo/lib/python3.6/lib-dynload', '/usr/lib/python3.6', '/home/smith/.virtualenvs/foo/lib/python3.6/site-packages'] $ echo > /home/smith/.virtualenvs/foo/lib/python3.6/site-packages/test.pth $ python -c 'import sys; print(sys.path)' ['', '/home/smith/.virtualenvs/foo/lib/python36.zip', '/home/smith/.virtualenvs/foo/lib/python3.6', '/home/smith/.virtualenvs/foo/lib/python3.6/lib-dynload', '/usr/lib/python3.6', '/home/smith/.virtualenvs/foo/lib/python3.6/site-packages', '/home/smith/.virtualenvs/foo/lib/python3.6/site-packages'] A patch fixing this is attached to issue 29326, but was ignored when that issue turned out to be caused by something else. ---------- components: Library (Lib) messages: 318137 nosy: Malcolm Smith priority: normal severity: normal status: open title: Blank lines in .pth file cause a duplicate sys.path entry type: behavior versions: Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33689> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
