find position of letter in string python code example

Example 1: how to find the location of a character in a string in python

>>> myString = 'Position of a character'
>>> myString.find('s')
2
>>> myString.find('x')
-1

Example 2: python get index of substring in liast

index = [idx for idx, s in enumerate(l) if 'tiger' in s][0]