[issue13728] Description of -m and -c cli options wrong?

Sandro Tosi report at bugs.python.org
Sat Jan 7 16:36:53 CET 2012


New submission from Sandro Tosi <sandro.tosi at gmail.com>:

Hi,
looking at http://mail.python.org/pipermail/docs/2011-December/006672.html I tried to replicate what the user said, and *it seems* that -c and -m doesn't add the current directory to the start of sys.path:

$ echo -e "import sys\nprint (sys.path)" > dummy.py ; ./python -mdummy
['', '/usr/local/lib/python27.zip', '/home/morph/cpython/py27/Lib', '/home/morph/cpython/py27/Lib/plat-linux2', '/home/morph/cpython/py27/Lib/lib-tk', '/home/morph/cpython/py27/Lib/lib-old', '/home/morph/cpython/py27/build/lib.linux-x86_64-2.7-pydebug', '/usr/local/lib/python2.7/site-packages']

and 

$ ./python -c "import dummy"
['', '/usr/local/lib/python27.zip', '/home/morph/cpython/py27/Lib', '/home/morph/cpython/py27/Lib/plat-linux2', '/home/morph/cpython/py27/Lib/lib-tk', '/home/morph/cpython/py27/Lib/lib-old', '/home/morph/cpython/py27/build/lib.linux-x86_64-2.7-pydebug', '/usr/local/lib/python2.7/site-packages']

the same sys.path as from the interactive shell:

$ ./python 
Python 2.7.2+ (2.7:f0666e56a552, Jan  7 2012, 16:31:06) 
[GCC 4.6.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
[38650 refs]
>>> sys.path
['', '/usr/local/lib/python27.zip', '/home/morph/cpython/py27/Lib', '/home/morph/cpython/py27/Lib/plat-linux2', '/home/morph/cpython/py27/Lib/lib-tk', '/home/morph/cpython/py27/Lib/lib-old', '/home/morph/cpython/py27/build/lib.linux-x86_64-2.7-pydebug', '/usr/local/lib/python2.7/site-packages']
[38657 refs]

So, is http://docs.python.org/using/cmdline.html#interface-options correct in saying "he current directory will be added to the start of sys.path (allowing modules in that directory to be imported as top level modules)."? (and so forth for -m option?) am I confused?

----------
assignee: docs at python
components: Documentation
messages: 150802
nosy: docs at python, sandro.tosi
priority: normal
severity: normal
stage: needs patch
status: open
title: Description of -m and -c cli options wrong?
versions: Python 2.7, Python 3.2, Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13728>
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