check if value of passed variable has uppercase characters in it.

[metulburr]

you shouldnt need to use regex for simple string checks.

Because str.lower() does not effect string'd digits, you can just check for upper

listname = ['ONE', 'two', 'Thr33', 'four', 'FiVe368']
  
for name in listname:
    if any(char.isupper() for char in name):
        print(name.lower())
    else:
        print("{} is good".format(name))

Output:
one
two is good
thr33
four is good
five368

If you really had to check digit you could do that as well

listname = ['ONE', 'two', 'Thr33', 'four', 'FiVe368', '67', '245245']
  
for name in listname:
    if any(char.isdigit() or char.isupper() for char in name):
        print(name.lower())
    else:
        print("{} is good".format(name))

Output:
one
two is good
thr33
four is good
five368
67
245245