to_utc.py

import datetime
import pytz
import dateutil.parser


def to_utc(str, *, zulu_marker=False):
    # string formats
    from_format = '%m/%d/%Y %I:%M:%S %p'
    to_format = '%m/%d/%Y %H:%M:%S'

    d = datetime.datetime.strptime(datestring, from_format)
    formated_datetime = d.strftime(to_format)
    if zulu_marker:
        formated_datetime += "Z"
    return formated_datetime