Get the most recent timestamp from a ZIP file

zip_most_recent_timestamp.py

#! /usr/bin/env python
# Prints the most recent timestamp for a file in a ZIP file (RFC-3339 format without timezone)
import datetime as dt
import sys
import zipfile

if not sys.argv[1:]:
    print ('Usage: {} foo.zip'.format(sys.argv[0]))
    exit(1)

z = zipfile.ZipFile(sys.argv[1])
t = dt.datetime(*max(a.date_time for a in z.infolist()))
print (t)