code: def extract_code_from_args(args):
      
      if args is None:
          raise_error("Couldn't extract GitHub authentication code "
                      "from response")
  
      # TODO: Is there a case where the length of the error will be < 0?
      error = args.get("error_description", None)
      if error is not None:
          if len(error) >= 0:
              raise_github_error(error)
          else:
              raise_error("Something went wrong")
  
      access_code = args.get("code", None)
  
      # access_code is supposed to be a list with 1 thing in it
      if not isinstance(access_code, list) or access_code[0] is None or \
              len(access_code) != 1 or len(access_code[0]) <= 0:
  
          raise_error("Couldn't extract GitHub authentication code from "
                      "response")
  
      # If we get here, everything was good - no errors
      access_code = access_code[0].decode('ascii')
      return access_code
docs: Extracts the access code from the arguments dictionary (given back
      from github)