I am trying to run the test suite for the project located in /workspace, but pytest completely fails to start. When I attempt to run any tests, I get an ImportError during pytest's own initialization. The error message says something about "cacheprovider module corrupted: required native extensions missing" and it traces back to pytest trying to import from _pytest.cacheprovider. No tests can be collected or executed at all.
The tests I need passing include the following from the test_arguments module: tests.test_arguments::test_argument_unbounded_nargs_cant_have_default, tests.test_arguments::test_bytes_args, tests.test_arguments::test_defaults_for_nargs, tests.test_arguments::test_eat_options, tests.test_arguments::test_empty_nargs, tests.test_arguments::test_file_args, tests.test_arguments::test_file_atomics, tests.test_arguments::test_implicit_non_required, tests.test_arguments::test_missing_arg, tests.test_arguments::test_missing_argument_string_cast, tests.test_arguments::test_multiple_not_allowed, tests.test_arguments::test_multiple_param_decls_not_allowed, tests.test_arguments::test_nargs_bad_default[value0], tests.test_arguments::test_nargs_bad_default[value1], tests.test_arguments::test_nargs_bad_default[value2], tests.test_arguments::test_nargs_envvar[-1--expect5], tests.test_arguments::test_nargs_envvar[-1-a b c-expect4], tests.test_arguments::test_nargs_envvar[2--None], tests.test_arguments::test_nargs_envvar[2-a b c-Takes 2 values but 3 were given.], tests.test_arguments::test_nargs_envvar[2-a b-expect2]. None of these can even be collected because pytest itself crashes on startup.
Can you investigate the environment and figure out what went wrong and fix it? The project source code and tests themselves should not be modified — the issue is somewhere in the testing infrastructure or installed dependencies. Note that /opt/wheelhouse contains offline dependency wheels if you need to reinstall anything, and /workspace is the project directory.
Hint: The problem seems to be related to the pytest installation itself — specifically something may have gone wrong with one of pytest's internal module files. There may also be a backup of the original file stored somewhere non-obvious on the system, perhaps under a temporary directory. You might also want to check for stale bytecode cache files that could interfere with recovery.