We are getting this error a lot:

GithubException: 403 {u'documentation_url': u'https://developer.github.com/v3/#rate-limiting', u'message': u'API rate limit exceeded for user.'}

According to their documentation on https://developer.github.com/v3/#rate-limiting, they send the X-RateLimit-Reset header in the response from which we can figure out when to make the api call again. Is it possible to get the value of that header in PyGithub? If not, how much is the minimum time we should wait before making the api call again?