python3 check string for single character code example

Example 1: how to check if all characters in string are same python

s == len(s) * s[0]

Example 2: can you look for specific characters in python

yourString = "string"

if "s" in yourString:
  print("There is an S in your string")
  
if "s" not in yourString:
  print("There is no S in your string")