What is python3 equivalent of Date.now() of javascript?

Question

In JavaScript, I can assign:

var now = Date.now();

Then use now to calculate as a number variable

>>> import datetime
>>> datetime.datetime.now()
>>> datetime.datetime.today()

In python3, Using upper code doesnt seem helpful. Any idea what is equivalent of Date.now().

Start with `datetime.datetime.now().timestamp()`. See https://www.tutorialspoint.com/How-to-convert-Python-DateTime-string-into-integer-milliseconds — jarmod, Oct 01 '20 at 13:37
Duplicate of [Get current time in milliseconds in Python?](https://stackoverflow.com/questions/5998245/get-current-time-in-milliseconds-in-python) — trincot, Oct 01 '20 at 13:50

score 7 · Accepted Answer · edited Oct 01 '20 at 13:46

7

You should use time module.

>>> import time
>>> int(time.time() * 1000) #for getting the millisecs

1601559393404

edited Oct 01 '20 at 13:46

Mr. Polywhirl

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answered Oct 01 '20 at 13:37

Equinox

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For time in milliseconds, try: `int(time.time() * 1000)` – Mr. Polywhirl Oct 01 '20 at 13:42
1

As @Mr.Polywhirl pointed out you can just multiply the string by 1000 and take the integer part of it to get the same result as of JS. – Equinox Oct 01 '20 at 13:46

score 0 · Answer 2 · answered Mar 04 '22 at 22:03

Date.now() returns the number of milliseconds elapsed since January 1, 1970 00:00:00 UTC. The Python 3.3 and later equivalent is:

from datetime import datetime, timezone

now_ms = int(datetime.now(tz=timezone.utc).timestamp() * 1000)

Without tz=timezone.utc, datetime.timestamp will use a naive datetime, usually set to your local time with timezone, daylight savings time, etc. This can be a subtle source of bugs, when going from Python to Javascript, between development environments and production, or around daylight savings time transitions.

What is python3 equivalent of Date.now() of javascript?

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