i got a task to go over a string and check if its reversable or almost reversable (removing 1 char from the string and it becomes reversible) and i need to return True or False,
in the code below it enters the if even when the two chars are the same.

def Question3 (str):
    reverse_str = str[::-1]
    count_difference = 0
    i = 0
    while i < len(str):
        if str[i] != reverse_str[i]:
            count_difference += 1
            str.replace(str[i],'')
            reverse_str.replace(reverse_str[i],'')
            i = i - 1
        i += 1
    if count_difference > 1:
        return False
    else:
        return True

print(Question3('annnnba')) #suppose to be True, but it got stuck on infinite loop on the first char