how to print capital letters in python code example

Example 1: how to check case of string in python

string = 'iAmABoy'

for letter in string:
    print(letter)
    if letter.isupper():
        print('yes')
        break
        
o/p:-
  i
  A
  yes
  
happy coding ^^

Example 2: python string caps lock

>>> s = 'sdsd'
>>> s.upper()
'SDSD'