Flag that we're time traveling, with access to true datetime

[pegler]

Description

In some of our integration tests we make API calls to external services. Some of these require a timestamp for use in authentication. I know that excluding some modules from time-machine isn't possible due to the implementation, but having some signal that we're time traveling would suffice, along with access to the unpatched datetime module.

[adamchainz]

You can get the real time with _time_machine.original_now() etc., as the replacement functions do:

time-machine/src/time_machine/__init__.py

Lines 349 to 353 in 29a9f0a

	def now(tz: Optional[dt.tzinfo] = None) -> dt.datetime:
	if not coordinates_stack:
	return _time_machine.original_now(tz)
	else:
	return dt.datetime.fromtimestamp(time(), tz)

And you can check if time travelling based upon whether time_machine.coordinates_stack is empty or not.

Can you check those works for you first?

Then we could add an official API.

[pegler]

That worked perfectly. Thanks! Having it officially supported via the API would be awesome. I can work on a PR next week.

[adamchainz]

I added escape_hatch and released it in 2.5.0. Try it out.