not_after.py

#/usr/bin/python
# usage
#   python not_after.py /path/to/cert
#!/bin/python

import sys
from rhsm import _certificate

cert = _certificate.load(sys.argv[1])

print "get_not_before():"
print cert.get_not_before()

print "get_not_after():"
print cert.get_not_after()

[root@abed ~]# ./not_after.py test.crt
get_not_before():
Feb 8 16:57:38 2016 GMT
get_not_after():
Bad time value