>>> import gitlab
>>> gl = gitlab.Gitlab("https://gitlab.com")
>>> project = gl.projects.get("gitlab-org/gitlab")
>>> signed_commit = project.commits.get("387572e7aa7768e2be539215e453d474d067e20d")
>>> signed_commit.signature()
{'gpg_key_id': None, 'gpg_key_primary_keyid': 'B89F5B74C808CB29', 'gpg_key_user_name': 'Daniel Paul Searles', 'gpg_key_user_email': 'dsearles@gitlab.com', 'verification_status': 'verified', 'gpg_key_subkey_id': 61400}

>>> unsigned_commit = project.commits.get("86b82a8ca235a886788581b0ff5bb24f4e4bfaa2")
>>> unsigned_commit.signature()
Traceback (most recent call last):
  File "/home/z003wwtz/repos/python-gitlab/gitlab/exceptions.py", line 271, in wrapped_f
    return f(*args, **kwargs)
  File "/home/z003wwtz/repos/python-gitlab/gitlab/v4/objects.py", line 2191, in signature
    return self.manager.gitlab.http_get(path, **kwargs)
  File "/home/z003wwtz/repos/python-gitlab/gitlab/__init__.py", line 598, in http_get
    "get", path, query_data=query_data, streamed=streamed, **kwargs
  File "/home/z003wwtz/repos/python-gitlab/gitlab/__init__.py", line 573, in http_request
    response_body=result.content,
gitlab.exceptions.GitlabHttpError: 404: 404 GPG Signature Not Found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/z003wwtz/repos/python-gitlab/gitlab/cli.py", line 43, in wrapped_f
    return f(*args, **kwargs)
  File "/home/z003wwtz/repos/python-gitlab/gitlab/exceptions.py", line 273, in wrapped_f
    raise error(e.error_message, e.response_code, e.response_body)
gitlab.exceptions.GitlabGetError: 404: 404 GPG Signature Not Found