sunstring in python using index of character 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 index of string

string = "Hello World"
string_slice = string[1:10] # "ello Worl" (index 1 up to 10)
string_last_chars = string[-5:] # "World" (5th index from last to the end)
H = string[0] # "H"