code: def iter_orgs(self, login=None, number=-1, etag=None):
          
          if login:
              url = self._build_url('users', login, 'orgs')
          else:
              url = self._build_url('user', 'orgs')
  
          return self._iter(int(number), url, Organization, etag=etag)
docs: Iterate over public organizations for login if provided; otherwise
          iterate over public and private organizations for the authenticated
          user.
  
          :param str login: (optional), user whose orgs you wish to list
          :param int number: (optional), number of organizations to return.
              Default: -1 returns all available organizations
          :param str etag: (optional), ETag from a previous request to the same
              endpoint
          :returns: generator of
              :class:`Organization <github3.orgs.Organization>`\ s