What is mistake in my code ?

Question

You are walking from your house to a pond that is down your street.
How many blocks over will you have to walk until you get to the pond?

Task:
Evaluate how many blocks you will have to walk if you are given a representation of your street where H represents your house, P represents the pond, and every B represents a block in between the two.

Input Format:
A string of letters representing your house, the pond, and blocks on your street.

Output Format:
An integer value that represents the number of blocks between your house and the pond.

Sample Input:
BBHBBBBPBBB

Sample Output:
4

Answer 1

Code:text=input()
ind=text.index("P")-1
ind2=text.index("H")
D=ind-ind2
print(D)