can't freeze `datetime.now()`

I decorated a test, and this test will call a func, take a look at the output:

somehow it successfully froze datetime.today() but not datetime.now()

this is more obvious:

import datetime as dtmodule

[andkon]

Same with Django’s timezone.now().

[abcdenis]

@gerrywd This is strange a bit to do some calculation as default parameter value. Use sentinel (None) instead:

#!/usr/bin/env python3
from datetime import datetime, date

from freezegun import freeze_time


def hello(initial_datetime=None, initial_date=date.today()):
    if initial_datetime is None:
        initial_datetime = datetime.now()
    print()
    print('initial_now', initial_datetime)
    print('inline__now', datetime.now())
    print('initial_today', datetime.now())
    print('inline__today', date.today())


@freeze_time("2021-05-05")
def test_hello():
    assert hello()

test2.py::test_hello FAILED                                              [100%]
initial_now 2021-05-05 00:00:00
inline__now 2021-05-05 00:00:00
initial_today 2021-05-05 00:00:00
inline__today 2021-05-05