def mutate_string(string, position, character): ns = string[:int(position)]+character[0]+string[int(position+1):] return ns

if name

Here is Mutations solution - https://programmingoneonone.com/hackerrank-mutations-problem-solution-in-python.html

def mutate_string(string, position, character): l = list(string) l[postion]=character modified_string = "".join( l ) return(modified_string)

def mutate_string(string, position, character): l = list(s) l[int(i)] = c strings = "".join(l) return strings

if name == 'main':

For Python3 Platform

def mutate_string(string, position, character):
    return string[:position] + character + string[position+1:]

if __name__ == '__main__':
    s = input()
    i, c = input().split()
    s_new = mutate_string(s, int(i), c)
    print(s_new)