grp_groups_for_user.py

#!/usr/bin/env python3
# encoding: utf-8
#
# Copyright 2009 Doug Hellmann.
#
#
#                         All Rights Reserved
#
# Permission to use, copy, modify, and distribute this software
# and its documentation for any purpose and without fee is hereby
# granted, provided that the above copyright notice appear in all
# copies and that both that copyright notice and this permission
# notice appear in supporting documentation, and that the name of
# Doug Hellmann not be used in advertising or publicity
# pertaining to distribution of the software without specific,
# written prior permission.
#
# DOUG HELLMANN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
# SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS, IN NO EVENT SHALL DOUG HELLMANN BE LIABLE FOR ANY
# SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
# IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
# THIS SOFTWARE.
#
"""
"""

#end_pymotw_header
import grp

username = 'dhellmann'
group_names = set(
    g.gr_name
    for g in grp.getgrall()
    if username in g.gr_mem
)
print(username, 'belongs to:', ', '.join(sorted(group_names)))