Incorrect code

[ichabod801]

Your return statement is in the wrong place. Remember that indentation matters in Python. return f should be at the same indentation level as the for statement.

Once you fix that, you will get an index error. Your looping variable i is going to go to the last index of d, and then your if statement is going to try to go one beyond that with d[i+1]. Normally I would suggest using enumerate, however since this is in homework you may not have gone over that in class. So would suggest for i in range(len(d) - 1):