如何自定义pytest名称

conftest.py

def pytest_itemcollected(item):
    """ change test name, using fixture names """
    item._nodeid = ', '.join(item._fixtureinfo.argnames)

import pytest

@pytest.fixture()
def fixture_1():
    pass

@pytest.fixture()
def fixture_2():
    pass

def test1(fixture_1):
    assert 1 == 1

def test_a(fixture_1, fixture_2):
    assert 1 == 2

pytest
============================= test session starts =============================
platform win32 -- Python 3.6.1, pytest-3.6.1, py-1.5.3, pluggy-0.6.0
rootdir: C:\Users\gelineau\Desktop\kaggle_flavien, inifile:
collected 2 items                                                              

fixture_1 .                                                              [ 50%]
fixture_1, fixture_2 F                                                   [100%]

================================== FAILURES ===================================
___________________________________ test_a ____________________________________

fixture_1 = None, fixture_2 = None

    def test_a(fixture_1, fixture_2):
>       assert 1 == 2
E       assert 1 == 2

test\test_so.py:15: AssertionError
===================== 1 failed, 1 passed in 0.86 seconds ======================

新的测试名称也用pycharm打印。