Hi, @nyermolenko-eis !

If you need to pass the result of a step into another step, use target_fixture instead:

@when("user calls GetQuery API endpoint", target_fixture="api_response")
def api_response():
    response = ...
    allure.attach("Text", "attachment-1", AttachmentType.TEXT)
    return response

@then("response is ok")
def validate_response(api_response):
    ...

Otherwise, it is expected for a fixture to be called before each test function where it is required, applying all the associated side effects during each call. Trying to revert those side effects (allure.attach is just one of them) is clearly a dead-end to me.

I will hold this issue opened for a week or two. If you cannot use target_fixture for some reason, please, provide more details about your scenario. Otherwise, you can close the issue and the pull request by yourself (or I will close them later if no feedback is given).