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devel / comp.lang.python / PythonPath / sys.path

PythonPath / sys.path

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Subject: PythonPath / sys.path
Date: Sat, 13 May 2023 11:42:52 +0100
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by: Grizzy Adams - Sat, 13 May 2023 10:42 UTC

Hi All

My first post (repeated)

I am having a problem with PythonPath / sys.path

I have a dir where I keep all my current work, but I can't seem to add it to
PythonPath / sys.path

When I try to import one of my modules I see

>>>import My_Working_File
Traceback (most recent call last):
File "<pyshell#0>", line 1, in <module>
import My_Working_File
ImportError: No module named 'My_Working_File'

I have tried adding my dir in registry to the existing PythonPath

[HKEY_CURRENT_USER\Software\Python\PythonCore\3.4\PythonPath]
@="D:\\Shades\\Tools\\Python\\Lib;D:\\Shades\\Tools\\Python\\DLLs"

that did not help,

I tried adding PYTHONPATH as an enviramental variable, that also had no effect

(I did re-boot after these two tests)

If I go to the editor window and run (F5) any of my modules then I can

>>> ================================ RESTART ================================
>>>
>>> import My_Working_File
>>>

without error

I can also (from a fresh start)

>>> import sys
>>> sys.path.append(r'D:\Shades\Tools\Python\MyWork')
>>> print(sys.path)
['', 'D:\\Shades\\Tools\\Python\\Lib\\idlelib',
'D:\\Shades\\Tools\\Python\\python34.zip', 'D:\\Shades\\Tools\\Python\\DLLs',
'D:\\Shades\\Tools\\Python\\lib', 'D:\\Shades\\Tools\\Python',
'D:\\Shades\\Tools\\Python\\lib\\site-packages',
'D:\\Shades\\Tools\\Python\\MyWork']
>>> import My_Working_File
>>>

I don't really want to go this route every time I start work, and more to the
point I will need (to learn how) to add dir's to the path at times

I did search the net for an answer but only got what I had already tried

any pointers what I'm doing wrong (other than using windows '->)

Grizz

Re: PythonPath / sys.path

<path-20230514173338@ram.dialup.fu-berlin.de>

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From: ram...@zedat.fu-berlin.de (Stefan Ram)
Newsgroups: comp.lang.python
Subject: Re: PythonPath / sys.path
Date: 14 May 2023 16:42:05 GMT
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by: Stefan Ram - Sun, 14 May 2023 16:42 UTC

"Grizzy Adams" <RealGrizzlyAdams@vivaldi.net> writes:
>I don't really want to go this route every time I start work, and more to the
>point I will need (to learn how) to add dir's to the path at times

Sometimes, an editable install of the path with your module helps.

pip install -e <absolute path of the dir containing your module(s)>

Above, "<absolute path of the dir containing your module(s)>"
should be replaced with the absolute path of the directory
containing your module(s).

Now, Python should be able to permanently find your modules!

Replace "pip" by "py -3.9 -m pip" (if you are using Windows) to
install for 3.9 (as an example) (if you have several Python versions
installed). Under Linux, use "python3.9" instead of "py -3.9".

Subject	Author
PythonPath / sys.path	Grizzy Adams
Re: PythonPath / sys.path	Stefan Ram