how do i add a new path into sys.path?

[wen]

on my system(win2k server, python 2.3.5),['C:\\', 'C:\\WINNT\\system32\\python23.zip',
'C:\\Python23\\lib\\site-packages\\Pythonwin',
'C:\\Python23\\lib\\site-packages\\win32',
'C:\\Python23\\lib\\site-packages\\win32\\lib',
'C:\\Python23\\lib\\site-packages', 'C:\\Python23\\DLLs',
'C:\\Python23\\lib', 'C:\\Python23\\lib\\plat-win',
'C:\\Python23\\lib\\lib-tk', 'C:\\Python23', 'D:\\Program Files\\DeLano
Scientific\\PyMOL\\modules']

now, i wanna add "C:\Python23\Pmw\Pmw_1_2\lib" into sys.path, how?

any help would be appreciated.

with my kind regards,
Wen

 

[apa]

You can do it this way:

sys.path.append("C:\Temp")

Alejandro

 

[bruno modulix]

on my system(win2k server, python 2.3.5),

['C:\\', 'C:\\WINNT\\system32\\python23.zip',
'C:\\Python23\\lib\\site-packages\\Pythonwin',
'C:\\Python23\\lib\\site-packages\\win32',
'C:\\Python23\\lib\\site-packages\\win32\\lib',
'C:\\Python23\\lib\\site-packages', 'C:\\Python23\\DLLs',
'C:\\Python23\\lib', 'C:\\Python23\\lib\\plat-win',
'C:\\Python23\\lib\\lib-tk', 'C:\\Python23', 'D:\\Program Files\\DeLano
Scientific\\PyMOL\\modules']

now, i wanna add "C:\Python23\Pmw\Pmw_1_2\lib" into sys.path, how?

any help would be appreciated.

hint 1: Python lists have an append() and an insert() method
hint 2: sys.path is a list

HTH

 

[wen]

if i wanna add the path "C:\temp" into sys.path, and make it available for
any other new python apps, like i add C:\temp into windows path , how?
thank you.

 

[poyol]

if i wanna add the path "C:\temp" into sys.path, and make it available for
any other new python apps, like i add C:\temp into windows path , how?
thank you.

Then use PYTHONPATH as you would use PATH .....

 

[wen]

if i wanna add the path "C:\temp" into sys.path, and make it available for
any other new python apps, like i add C:\temp into windows path , how?
thank you.

 

[Steve Holden]

You can do it this way:

sys.path.append("C:\Temp")

Alejandro

Better:

sys.path.append("C:\\Temp")

or

sys.path.append(r"C:\Temp")

regards
Steve

 

[John Machin]

on my system(win2k server, python 2.3.5),

['C:\\', 'C:\\WINNT\\system32\\python23.zip',
'C:\\Python23\\lib\\site-packages\\Pythonwin',
'C:\\Python23\\lib\\site-packages\\win32',
'C:\\Python23\\lib\\site-packages\\win32\\lib',
'C:\\Python23\\lib\\site-packages', 'C:\\Python23\\DLLs',
'C:\\Python23\\lib', 'C:\\Python23\\lib\\plat-win',
'C:\\Python23\\lib\\lib-tk', 'C:\\Python23', 'D:\\Program Files\\DeLano
Scientific\\PyMOL\\modules']

now, i wanna add "C:\Python23\Pmw\Pmw_1_2\lib" into sys.path, how?

any help would be appreciated.

with my kind regards,
Wen

cat clpyaibot.log
* sys.path is instance of <list>.
* "C:\Python23\Pmw\Pmw_1_2\lib" is a [non-raw, living dangerously] string.
* does not compute, trying again under various failure modes ...
* detected Shift key failure
* interpreting "wanna" as "want to"
* parsed chunk: """I want to add <str> into <list>"""
* no such keyword: "add"
* <str>.add ... not found
* <list>.into ... not found
* <list>.addinto ... not found
* checking plausible alternatives ...
* <list>.append(<object>)
* <list>.insert(<index>, <object>)

 

[James Sungjin Kim]

sys.path.append(r"C:\Temp")

In this case, do I need to save the refined path, i.e, the original
paths + the new path (r"C:\Temp"), by using some command in order to use
it permanently. if yes, it would be greatly appreciated to noitce the
correspoding command and the usage of it.

-James

 

[Steve Holden]

In this case, do I need to save the refined path, i.e, the original
paths + the new path (r"C:\Temp"), by using some command in order to use
it permanently. if yes, it would be greatly appreciated to noitce the
correspoding command and the usage of it.

-James

The method I outlined works only for the duration of a single program
run, because the sys.path variable is set up each time you run the
Python interpreter. You need to look at the suggestions you've had for
setting the PYTHONPATH environment variable to effect changes to all
future Python execution.

Essentially this is most usually done in the "My Computer -> Properties"
dialog: click the "environment variables" button and create a new
(all-users or private, depending on your needs) environment variable
called PYTHONPATH containing a semicolon-separated list of directories
the interpreter should add to the path.

regards
Steve

 

[Peter Hansen]

The method I outlined works only for the duration of a single program
run, because the sys.path variable is set up each time you run the
Python interpreter. You need to look at the suggestions you've had for
setting the PYTHONPATH environment variable to effect changes to all
future Python execution.

Or, often better and cleaner, use .pth files as described in the
documentation for the standard library "site" module.

-Peter