[issue31440] wrong default module search path in help message

[Cheryl Sabella]

Change by Cheryl Sabella :


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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue31440] wrong default module search path in help message

[Christian Heimes]

Christian Heimes  added the comment:


New changeset cb79c2203953bd465f2c53b7a09a51071717575f by Christian Heimes 
(Miss Islington (bot)) in branch '3.6':
bpo-31440: Changed default module search path for windows (#4613)
https://github.com/python/cpython/commit/cb79c2203953bd465f2c53b7a09a51071717575f


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[issue31440] wrong default module search path in help message

[Christian Heimes]

Christian Heimes  added the comment:

I'll do a backport tomorrow.

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assignee:  -> christian.heimes

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[issue31440] wrong default module search path in help message

[STINNER Victor]

STINNER Victor  added the comment:

I confirm that Python 2.7 is affected and should also be fixed.

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nosy: +vstinner

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[issue31440] wrong default module search path in help message

[Roundup Robot]

Change by Roundup Robot :


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pull_requests: +4528

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[issue31440] wrong default module search path in help message

[Christian Heimes]

Christian Heimes  added the comment:


New changeset 08d2b86a1058b733bb7f1ae2b55818dd9687d21c by Christian Heimes 
(gauravbackback) in branch 'master':
bpo-31440: Changed default module search path for windows
https://github.com/python/cpython/commit/08d2b86a1058b733bb7f1ae2b55818dd9687d21c


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[issue31440] wrong default module search path in help message

[Steve Dower]

Steve Dower added the comment:

I don't have time right this second to write it all up, but I did so in the 
past at https://docs.python.org/3/using/windows.html#finding-modules

Hopefully the answer you need is somewhere in that. Module search paths are 
complicated (but eric.snow is going to make it possible to use Python code to 
derive the search path at startup... right Eric? Right? :) )

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nosy: +eric.snow

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[issue31440] wrong default module search path in help message

[Xiang Zhang]

Xiang Zhang added the comment:

Not sure about Windows. _get_path() looks to me is used for user site-packages. 
getsitepackages() doesn't do the same and seems matching the current message, 
also the OS2 branch in py2. Let's consult Windows guys.

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nosy: +eryksun, gauravbackback, steve.dower, zach.ware

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[issue31440] wrong default module search path in help message

[Gaurav Singh]

Changes by Gaurav Singh :


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keywords: +patch
pull_requests: +3614
stage: needs patch -> patch review

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[issue31440] wrong default module search path in help message

[Christian Heimes]

Christian Heimes added the comment:

See site module, especially site._get_path()

# Same to sysconfig.get_path('purelib', os.name+'_user')
def _get_path(userbase):
version = sys.version_info

if os.name == 'nt':
return f'{userbase}\\Python{version[0]}{version[1]}\\site-packages'

if sys.platform == 'darwin' and sys._framework:
return f'{userbase}/lib/python/site-packages'

return f'{userbase}/lib/python{version[0]}.{version[1]}/site-packages'

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[issue31440] wrong default module search path in help message

[Christian Heimes]

Christian Heimes added the comment:

You are right, the path is wrong on Unix-like platforms. It's 
os.path.join(sys.prefix, 'lib', 'python{major}.{minor}'). But the actual path 
may depend on the platform, too. I don't recall how Windows sets up the path.

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nosy: +christian.heimes
type:  -> behavior

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[issue31440] wrong default module search path in help message

[Xiang Zhang]

New submission from Xiang Zhang:

In python --help:

PYTHONHOME   : alternate  directory (or :).
   The default module search path uses /pythonX.X.

I think the default module search path should be /lib/pythonX.X.

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keywords: easy
messages: 302032
nosy: xiang.zhang
priority: normal
severity: normal
stage: needs patch
status: open
title: wrong default module search path in help message
versions: Python 2.7, Python 3.6, Python 3.7

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