41 def verify_users(users):  argument
42     for u in users:
48 def chcat_user_add(newcat, users):  argument
53     verify_users(users)
54     for u in users:
127 def chcat_user_remove(newcat, users):  argument
132     verify_users(users)
133     for u in users:
211 def chcat_user_replace(newcat, users):  argument
216     verify_users(users)
217     for u in users:
350 def listusercats(users):  argument
351     if len(users) == 0:
352         users.append(os.getlogin())
354     verify_users(users)
355     for u in users: