CODEWITHSUNDEEP
pythonpytestvalueerror
Rajashekar Govindaswamy
Rajashekar Govindaswamy

Reputation: 51

ValueError: option names already added pytest

#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

Running the command

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

I am getting the following error, can anybody help?

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

Upvotes: 5

Views: 9029

Answers (4)

user7216373
user7216373

Reputation: 62

In my case there was a conflict with a different testrail package, that I had previously installed with pip.

I listed the testrail pip packages on my system with:

pip freeze | grep testrail

and then uninstalled the old testrail package I had with:

pip uninstall <testrail-package-name>

This solved the issue.

Upvotes: 0

stribb
stribb

Reputation: 81

You can prevent pytest from walking into directories it shouldn't (out and build in my case) by adding this to pytest.ini:

[pytest]
norecursedirs=out build

Upvotes: 1

canary_in_the_data_mine
canary_in_the_data_mine

Reputation: 2393

I resolved a similar issue by deleting a .pytest_cache directory in the working directory.

Upvotes: 1

Michał Kaczanowicz
Michał Kaczanowicz

Reputation: 627

I had a similar issue myself, it turned out that I had another conftest.py file copied to a directory one level higher in hierarchy, so pytest actually "saw" (and was trying to load) both of them, and he detected option with name "--add" twice.

Upvotes: 9

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