[Distutils] Question on using distutils.core.run_setup

[Tarek Ziadé]

On Tue, Mar 18, 2008 at 6:27 AM, Terry Jones <terry at jon.es> wrote:

> [Apologies if this is in the mailing list archives. I looked but didn't
> see anything, based on a search for run_setup]
>
> I'm trying to programmatically install something built using distutils. I
> found distutils.core.run_setup and can use it via
>
>  >>> dist = run_setup('setup.py', ['-q', 'install'])
>
> Is that the recommended way to do an install from inside Python (as
> opposed
> to doing it on the command line)?


I don't use this command because it does an execfile, which will lead to
errors
if the setup script uses some globals like __file__, iirc

You can import the module that contains the setup() call  from you code as
long as you
set the sys.argv values as you would do through the command line *before*
the import statement.

I would do something like this::

import sys
import os

def run_setup(script='setup.py', args=('install',)):
    base_name = os.path.basename(script)
    module_name = script.split('.')[0]
    folder_name = os.path.realpath(os.path.dirname(script))
    old = sys.argv
    old_location = os.curdir
    try:
        os.chdir(folder_name)
        sys.argv = [base_name] + list(args)
        __import__(module_name)
    finally:
        os.chdir(old_location)
        sys.argv = old

if __name__ == '__main__':
    if len(sys.argv) > 1:
        setup_py = sys.argv[1]
        run_setup(setup_py, sys.argv[2:])
    else:
        run_setup()


>
> If so, how can I find where the thing(s) I installed now resides?  I saw
> dist.packages but that just has top-level package names. I could
> __import__
> these (and then use module.__file__), but that's not a good solution as it
> may run code I don't want run. On my machine, I can see the packages have
> been installed under the system's python2.5/site-packages directory. But
> how can I determine that programmatically? I don't see anything useful on
> the distutils.dist.Distribution instance I'm getting back from run_setup.


I don't know about run_setup but you can use get_python_lib when you are
using
default locations on your setup() call. It will give you the default
location:

>>> from distutils.sysconfig import get_python_lib
>>> get_python_lib()
'/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages'



>
> Thanks!
>
> Terry
> _______________________________________________
> Distutils-SIG maillist  -  Distutils-SIG at python.org
> http://mail.python.org/mailman/listinfo/distutils-sig
>



-- 
Tarek Ziadé | Association AfPy | www.afpy.org
Blog FR | http://programmation-python.org
Blog EN | http://tarekziade.wordpress.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.python.org/pipermail/distutils-sig/attachments/20080318/097c24bf/attachment.htm