Question

Here is a basic code I came up with to list modules installed.

import sys as s
mod=s.modules.keys()
for indx,each in enumerate(mod):
    print indx,each

But what I am looking for is, it should only print out the parent module name like for

 numpy.f2py.pprint'
 numpy.distutils.atexit'
 numpy.distutils.sys'
 numpy.f2py.sys'

It should count it once as Numpy and move to look for next module and repeat same way…

Answer 1

import sys as s
mod=s.modules.keys()
mods_seen = list()
for indx,each in enumerate(mod):
    parts = each.split('.')
    if not parts[0] in mods_seen:
        print indx,each
        mods_seen.append(parts[0])