Detect pytest PRs whose related issues have not been closed

check_leftover_pytest_issues.py

from github import Github  # uses https://github.com/PyGithub/PyGithub
mytoken = ''  # insert your GH API token here
g = Github(login_or_token=mytoken)
repo = g.get_repo('pytest-dev/pytest')
candidates = {}
for m in (pr for pr in repo.get_pulls(state='closed') if pr.merged==True):
    pr_number = m.number
    print('Checking PR {}'.format(pr_number))
    issuenr = None
    files = m.get_files()
    for fname in (f.filename for f in files):
        # detect filename pattern like 'changelog/1505.doc'
        if fname.startswith('changelog'):
            entry = fname.split('/')[1]
            issuenr = entry.split('.')[0]
            try:
                issuenr = int(issuenr)
            except ValueError as e:
                print('Encountered invalid issue number: {}'.format(issuenr))
                issuenr = 0
            print('Related issue: {}'.format(issuenr))
            break  # for speed, assume there's only one changelog entry
    if issuenr:
        issue_state = repo.get_issue(int(issuenr)).state
        if issue_state == 'open':
            print('PR {}: Issue {} not closed!'.format(pr_number, issuenr))
            candidates[pr_number] = issuenr
print(candidates)