problem in appending a path to sys.path

[ketulp_baroda]

Hi
I am having a problem in appending to sys.path
I am doing it this way:['D:\\PYTHON23', 'D:\\PYTHON23\\Lib\\idlelib',
'D:\\WINNT\\system32\\python23.zip',
'D:\\PYTHON23\\lib\\site-packages\\Pythonwin',
'D:\\PYTHON23\\lib\\site-packages\\win32',
'D:\\PYTHON23\\lib\\site-packages\\win32\\lib',
'D:\\PYTHON23\\lib\\site-packages', 'D:\\Python23\\DLLs',
'D:\\Python23\\lib', 'D:\\Python23\\lib\\plat-win',
'D:\\Python23\\lib\\lib-tk', 'D:\\Python23']['D:\\PYTHON23', 'D:\\PYTHON23\\Lib\\idlelib',
'D:\\WINNT\\system32\\python23.zip',
'D:\\PYTHON23\\lib\\site-packages\\Pythonwin',
'D:\\PYTHON23\\lib\\site-packages\\win32',
'D:\\PYTHON23\\lib\\site-packages\\win32\\lib',
'D:\\PYTHON23\\lib\\site-packages', 'D:\\Python23\\DLLs',
'D:\\Python23\\lib', 'D:\\Python23\\lib\\plat-win',
'D:\\Python23\\lib\\lib-tk', 'D:\\Python23',
'D:\\Python23\\Lib\\site-packages\\code']

But when I close the shell and now again open it & do sys.path , it
doesnt show the path I last appended. i.e
['D:\\PYTHON23', 'D:\\PYTHON23\\Lib\\idlelib',
'D:\\WINNT\\system32\\python23.zip',
'D:\\PYTHON23\\lib\\site-packages\\Pythonwin',
'D:\\PYTHON23\\lib\\site-packages\\win32',
'D:\\PYTHON23\\lib\\site-packages\\win32\\lib',
'D:\\PYTHON23\\lib\\site-packages', 'D:\\Python23\\DLLs',
'D:\\Python23\\lib', 'D:\\Python23\\lib\\plat-win',
'D:\\Python23\\lib\\lib-tk', 'D:\\Python23']

What am I doing wrong here??

 

[rabbits77]

sys.path.append(r'D:\Python23\Lib\site-packages\code')

['D:\\PYTHON23', 'D:\\PYTHON23\\Lib\\idlelib',
'D:\\WINNT\\system32\\python23.zip',
'D:\\PYTHON23\\lib\\site-packages\\Pythonwin',
'D:\\PYTHON23\\lib\\site-packages\\win32',
'D:\\PYTHON23\\lib\\site-packages\\win32\\lib',
'D:\\PYTHON23\\lib\\site-packages', 'D:\\Python23\\DLLs',
'D:\\Python23\\lib', 'D:\\Python23\\lib\\plat-win',
'D:\\Python23\\lib\\lib-tk', 'D:\\Python23',
'D:\\Python23\\Lib\\site-packages\\code']

But when I close the shell and now again open it & do sys.path , it
doesnt show the path I last appended. i.e


['D:\\PYTHON23', 'D:\\PYTHON23\\Lib\\idlelib',
'D:\\WINNT\\system32\\python23.zip',
'D:\\PYTHON23\\lib\\site-packages\\Pythonwin',
'D:\\PYTHON23\\lib\\site-packages\\win32',
'D:\\PYTHON23\\lib\\site-packages\\win32\\lib',
'D:\\PYTHON23\\lib\\site-packages', 'D:\\Python23\\DLLs',
'D:\\Python23\\lib', 'D:\\Python23\\lib\\plat-win',
'D:\\Python23\\lib\\lib-tk', 'D:\\Python23']

What am I doing wrong here??

sys.path changed for the same reason why if you set
a="puke"
in the interpreter and then closed the shell and restarted the
interpreter, the variable a would have no value!!
You are not making a permanent change to sys.path using sys.append!!
I think you really want to modify the PYTHONPATH environment variable,
I'd guess.

 

[Peter Hansen]

What am I doing wrong here??

As rabbits77 said, your change is not being persisted. What you
can do instead of using PYTHONPATH, if you wish, is read the header
comment in the file python\lib\site.py (i.e. look in your Python
folder tree for that file) and create a ".pth" file with the appropriate
contents. As you are on Windows, make sure you take care to create it
with a lower-case extension, not .PTH, as site.py is case-sensitive in
this respect.

-Peter

 

[ketulp_baroda]

As rabbits77 said, your change is not being persisted. What you
can do instead of using PYTHONPATH, if you wish, is read the header
comment in the file python\lib\site.py (i.e. look in your Python
folder tree for that file) and create a ".pth" file with the appropriate
contents. As you are on Windows, make sure you take care to create it
with a lower-case extension, not .PTH, as site.py is case-sensitive in
this respect.

-Peter

Thanks
this is exactly what I was looking for