'Create a pull request from issue #``issue``.
:param int issue: (required), issue number
:param str base: (required), e.g., \'master\'
:param str head: (required), e.g., \'username:branch\'
:returns: :class:`PullRequest <github3.pulls.PullRequest>` if
successful, else None'

@requires_auth
def create_pull_from_issue(self, issue, base, head):

    if (int(issue) > 0):
        data = {u'issue': issue, u'base': base, u'head': head}
        return self._create_pull(data)
    return None
