code: def get_authors(pr):
      print("getting authors for #%i" % pr["number"], file=sys.stderr)
      h = make_auth_header()
      r = requests.get(pr["commits_url"], headers=h)
      r.raise_for_status()
      commits = r.json()
      authors = []
      for commit in commits:
          author = commit["commit"]["author"]
          authors.append(f"{author['name']} <{author['email']}>")
      return authors
  
imports: import getpass
  import json
  import os
  import re
  import sys
  import requests
label_desc: Use image node_id 13 for calling a global function with example usage: get_authors(pr) and returns: authors