.. _c-extension-no-member:

c-extension-no-member / I1101
=============================

**Message emitted:**

``%s %r has no %r member%s, but source is unavailable. Consider adding this module to extension-pkg-allow-list if you want to perform analysis based on run-time introspection of living objects.``

**Description:**

*Used when a variable is accessed for non-existent member of C extension. Due to unavailability of source static analysis is impossible, but it may be performed by introspecting living objects in run-time.*

.. caution::
  By default, this message will not fail the execution (pylint will return 0).
  To make pylint fail for this message use the ``--fail-on=I1101`` option
  or ``--fail-on=I`` to fail on all enabled informational messages.





**Additional details:**

``c-extension-no-member`` is an informational variant of ``no-member`` to encourage
allowing introspection of C extensions as described in the
`page <https://pylint.readthedocs.io/en/latest/user_guide/messages/error/no-member.html>`_
for ``no-member``.



Created by the `typecheck <https://github.com/pylint-dev/pylint/blob/main/pylint/checkers/typecheck.py>`__ checker.