code: def main():
      
      if len(sys.argv) != 2:
          print("Usage: {} USERNAME".format(sys.argv[0]))
          return 1
  
      caching_requestor = prawcore.Requestor(
          "prawcore_device_id_auth_example", session=CachingSession()
      )
      authenticator = prawcore.TrustedAuthenticator(
          caching_requestor,
          os.environ["PRAWCORE_CLIENT_ID"],
          os.environ["PRAWCORE_CLIENT_SECRET"],
      )
      authorizer = prawcore.ReadOnlyAuthorizer(authenticator)
      authorizer.refresh()
  
      user = sys.argv[1]
      with prawcore.session(authorizer) as session:
          data1 = session.request("GET", "/api/v1/user/{}/trophies".format(user))
  
      with prawcore.session(authorizer) as session:
          data2 = session.request("GET", "/api/v1/user/{}/trophies".format(user))
  
      for trophy in data1["data"]["trophies"]:
          description = trophy["data"]["description"]
          print(
              "Original:",
              trophy["data"]["name"]
              + (" ({})".format(description) if description else ""),
          )
  
      for trophy in data2["data"]["trophies"]:
          description = trophy["data"]["description"]
          print(
              "Cached:",
              trophy["data"]["name"]
              + (" ({})".format(description) if description else ""),
          )
      print(
          "----\nCached == Original:",
          data2["data"]["trophies"] == data2["data"]["trophies"],
      )
  
      return 0
docs: Provide the program's entry point when directly executed.