Lowercase letter counter X59386

Statement

Write a function @low_let_counter(s)@ that returns the number of lowercase letters in string $s$ . You can use the string method @islower()@ to check whether given an string it has at least one letter and all its letters are lowercase letters. For instance, @my_string.islower()@ is True when @my_string@ is ’good morning’ or ’2 x 5’ or ’z’ and is False when @my_string@ is ’Good morning’ or ’Z’ or ’123456’.

Sample session

>>> low_let_counter('The End')
4
>>> low_let_counter('Compute: 3 + 5')
6
>>> low_let_counter('66sixty_six66')
8

Information

Author: ProAl
Language: English
Official solutions: Python
User solutions: Python