[root@c7 ~]# rpm --query --whatprovides python-argparse 
python-2.7.5-34.el7.x86_64
[root@c7 ~]# python2.7 -c "import pkg_resources; pkg_resources.get_distribution('argparse')"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 371, in get_distribution
    if isinstance(dist,Requirement): dist = get_provider(dist)
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 243, in get_provider
    return working_set.find(moduleOrReq) or require(str(moduleOrReq))[0]
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 728, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 626, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: argparse