old_contents: # These have to be synced with the stdlib.pxi
  import asyncio
  import collections
  import concurrent.futures
  import functools
  import itertools
  import os
  import socket
  import sys
  import threading
  
new_contents: # These have to be synced with the stdlib.pxi
  import asyncio
  import collections
  import concurrent.futures
  import functools
  import itertools
  import os
  import signal
  import socket
  import subprocess
  import sys
  import threading
  
subject: Update includes modules list