Running pytest.main twice from the same python script

[nadavchernin]

Hi,
I have script which run pytest.main twice.
There is a test which needs to be run in each session with different parametrized values
In parametrizing decorator i use function get_time:

import datetime
import pytest

def get_time():
time_list = [datetime.datetime.now().second,
datetime.datetime.now().second + 1]
return time_list

@pytest.mark.parametrize('time',get_time())
def test_1(time):
print(time)

The main script as follows:

import pytest

sq = ["--collect-only", # Here are pytest flags
"rx_setup_tests/test_twice_parametrize.py::test_1",
]
pytest.main(sq)

sq = ["--collect-only", # Here are pytest flags
"rx_setup_tests/test_twice_parametrize.py::test_1",
]
pytest.main(sq)

The function get_time is called only once and the parameterized arguments stay the same in the second session.

Please your advice

Thank you very much, Nadav

[RonnyPfannschmidt]

This is in line with how python work's

Imports get cached

[nadavchernin]

Hi, Ronny
Not sure i understand you

[RonnyPfannschmidt]

The first time pytest runs, the tests get imported, and cached

The second time pytest Runs in the same process,those already imported modules are used again

[nicoddemus]

To complement:

The second time pytest Runs in the same process,those already imported modules are used again

This is how Python works, not something specific to pytest.

In the example, @pytest.mark.parametrize('time',get_time()) is executed at import time, so executed only once.