Timestamp with milliseconds
import datetime
print "Timestamp %s" % datetime.datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]
# Output: Timestamp 2017-05-07 21:32:42.379
import datetime
print "Timestamp %s" % datetime.datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]
# Output: Timestamp 2017-05-07 21:32:42.379