python check number of same letters in string code example

Example 1: python return number of characters in string

# Example usage:
your_string = "Example usage"
len(your_string)
--> 13

Example 2: check for double character in a string python

count = {}
for s in check_string:
  if s in count:
    count[s] += 1
  else:
    count[s] = 1

for key in count:
  if count[key] > 1:
    print key, count[key]