import pytest


@pytest.fixture
def login():
    print("登录操作")
    username = "xuefeifei"
    return username

class TestDemo:
    def test_a(self,login):
        print(f"a name = {login}") #使用login的返回值

    def test_b(self):
        print("b")

    def test_c(self):
        print("c")