How can I convert a datetime object to milliseconds since epoch (unix time) in Python?

Question

I have a Python datetime object that I want to convert to unix time, or seconds/milliseconds since the 1970 epoch.

How do I do this?

Answer 1

A bit of pandas code:

import pandas

def to_millis(dt):
    return int(pandas.to_datetime(dt).value / 1000000)