def create_review_request(self, reviewers=github.GithubObject.NotSet, team_reviewers=github.GithubObject.NotSet):
post_parameters = dict()<EOL>if reviewers is not github.GithubObject.NotSet:<EOL><INDENT>assert all(isinstance(element, (str, unicode)) for element in reviewers), reviewers<EOL>post_parameters["<STR_LIT>"] = reviewers<EOL><DEDENT>if team_reviewers is not github.GithubObject.NotSet:<EOL><INDENT>assert all(isinstance(element, (str, unicode)) for element in team_reviewers), team_reviewers<EOL>post_parameters["<STR_LIT>"] = team_reviewers<EOL><DEDENT>headers, data = self._requester.requestJsonAndCheck(<EOL>"<STR_LIT:POST>",<EOL>self.url + "<STR_LIT>",<EOL>input=post_parameters<EOL>)<EOL>
:calls: `POST /repos/:owner/:repo/pulls/:number/requested_reviewers <https://developer.github.com/v3/pulls/review_requests/>`_
:param reviewers: list of strings
:param team_reviewers: list of strings
:rtype: None