sys.path - Dev Shed

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November 10th, 2004, 12:00 AM

NewPythoner

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sys.path

Hi,
When I use the sys.path command I get a list of paths

Code:

>>> sys.path
['', 'C:\\WINDOWS\\system32\\python23.zip', 'C:\\Python23', 'C:\\Python23\\DLLs', 'C:\\Python23\\lib', 'C:\\Python23\\lib\\plat-win', 'C:\\Python23\\lib\\lib-tk', 'C:\\Python23\\Lib\\site-packages\\pythonwin', 'C:\\Python23\\Lib\\site-packages\\win32', 'C:\\Python23\\Lib\\site-packages\\win32\\lib', 'C:\\Python23\\lib\\site-packages']

why is that so?

Rgds,
Subha

November 10th, 2004, 03:39 AM

DevCoach

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From the docs for the sys module:

Quote:

path
A list of strings that specifies the search path for modules. Initialized from the environment variable PYTHONPATH, plus an installation-dependent default.
As initialized upon program startup, the first item of this list, path[0], is the directory containing the script that was used to invoke the Python interpreter. If the script directory is not available (e.g. if the interpreter is invoked interactively or if the script is read from standard input), path[0] is the empty string, which directs Python to search modules in the current directory first. Notice that the script directory is inserted before the entries inserted as a result of PYTHONPATH.

A program is free to modify this list for its own purposes.

Changed in version 2.3: Unicode strings are no longer ignored..

sys.path contains a list of directories because Python can search for module files in multiple locations.

Dave

November 10th, 2004, 04:42 AM

NewPythoner

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Thanks Dave, wasn't aware of this concept!

Subha

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