Still failing some test cases

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

My_code

address = input()
house =address.index('H')
pond = address.index('P')
blocks = address[house:pond+1]
print(blocks.count('B'))

Answer 1

Victor Uwemedimo George
Your code fails for the case when index of H is greater than index of P.
Instead you can try:-
``
blocks = address[house:pond+1] if house < pond else address[pond:house+1]
``

Answer 2

I found the problem already , because the pond could be before the house and slicing the string would result in an empty string, so i used an if statement to switch between address[house:pond] and address[pond: house]

Answer 3

thanks gulshan