isdigit string code example

Example 1: isdigit python

s='12'
s.isdigit()#returns True

Example 2: python sort isdigit

>>> my_list= ['image101.jpg', 'image2.jpg', 'image1.jpg']
>>> my_list.sort(key=lambda x: int(''.join(filter(str.isdigit, x))))
>>> my_list
['image1.jpg', 'image2.jpg', 'image101.jpg']