def __init__(self, client=None):
        self.client = client and AsyncHTTPClient()
        self.github_api_url = os.environ.get('GITHUB_API_URL', 'https://api.github.com/')
        self.authenticate()
dataset/ETHPy150Open jupyter/nbviewer/nbviewer/providers/github/client.py/AsyncGitHubClient.__init__/operator `or` -> `and`