check for repeated characters/letter in a string

Question

hi i want to check if a string from user input has two repeated characters/letters in a string next to eachother.. i have a simple code to check if the first letter and second l

Answer 1

As the comments already mentioned you should use a for loop:

def two_same(string)
   for i in range(len(string)-1):
      if string[i] == string[i+1]:
         return True
   return False

result = ""
while not two_same(result):
   result = input("enter the same letter twice:")
print(result)