Python celery task for Pull Requests reminders

pr_reminder.py

@shared_task()
def daily_pr_reminder():
    list_of_repos = []
    # Use both pygithub and our Github API since we are using Github API beta endpoints
    gh = GithubAPI(GithubToken.repo_token)
    g = Github(GithubToken.repo_token.value)
    for repo_string in list_of_repos:
        repo = g.get_repo(repo_string, lazy=False)
        attachments = []
        for pr in repo.get_pulls():
            reviews = gh.get_pull_request_reviews('deploy-manager', pr.number)
            field = generate_field_from_reviews(pr.user, reviews)
            # The PR state display if the jenkins build is working or not
            pr_state = gh.get_pull_request_build_state('deploy-manager', pr.head.sha)
            if pr_state == 'success':
                color = 'good'
            else:
                color = 'danger'
            converted_age = get_user_friendly_pr_age(pr)
            title = '#%s <%s|%s> - %s ago - %s'\
                    % (pr.number, pr.html_url, pr.title, converted_age, pr.user.login)
            attachments.extend(generate_raw_attachment(color=color, fields=field,
                                                       text=title))
        # Notify only if there are any attachments,
        # In other words, Ignore when there are no open PRs
        if attachments:
            payload = {
                'text': 'The following pull requests are open in Repo: %s and may need review:' % repo_string,
                'attachments': attachments,
                'channel': 'slack_channel'
                }
            perform_slack_notification(payload=payload,
                                       webhook_url='slack_webhook_url')