ValueError: 选项名称已添加 pytest

Question

#conftest.py

include pytest
def pytest_addoption(parser):
   parcer.addoption("--add", action="append")

@pytest.fixture(scope='session')
def adding(request):
    name_value = request.config.option.add
    if name_value == "plus":
        arg1 = 1
        arg2 = 2
        return arg1, arg2

#addition.py

@mark.first
def test_Valid_US_Phone_Number_1(adding):
    val1, val2 = adding
    assert val1 + val2 == 3

运行命令

$pytest -m first plusplus.py --add plus

我收到以下错误，有人可以帮忙吗？

File "c:\users\g702823\appdata\local\continuum1\anaconda3\lib\site-packages\_pytest\config\argparsing.py", line 72, in addoption
self._anonymous.addoption(*opts, **attrs)

File "c:\users\g702823\appdata\local\continuum1\anaconda3\lib\site-packages\_pytest\config\argparsing.py", line 303, in addoption
raise ValueError("option names %s already added" % conflict)

ValueError: option names {'--add'} already added

Answer 1

我自己也遇到了类似的问题，结果我将另一个conftest.py文件复制到层次结构中更高级别的目录中，因此 pytest 实际上“看到”（并试图加载）它们两个，并且他检测到名称为“- -添加”两次。