From a module, run few tests in parallel and few in serial

[sankethkamathk]

Without running pytest command more than once, is it possible to run few tests in parallel and few in serial

#test_abc.py

def test_first():
pass

def test_second():
pass # say this test take 1 min

def test_third()
pass # say this test takes 5 mins

here, i want to run test_second test_third in parallel