Escribe un programa que reciba una lista de cadenas de texto y determine cuántas de ellas contienen al menos una letra mayúscula y al menos una letra minúscula.
def at_least_one_capital_and_small_letter(list_of_strings): list_of_strings_with_capital_and_small_letters = [] for some_string in list_of_strings: if capital_letters(some_string) and small_letters(some_string): list_of_strings_with_capital_and_small_letters.append(some_string) return list_of_strings_with_capital_and_small_letters def capital_letters(string): for letter in string: if letter.isupper(): return True return False def small_letters(string): for letter in string: if letter.islower(): return True return False example_list = ['HELLO', 'python', 'I', 'am', 'batman'] at_least_one_capital_and_small_letter(example_list)