build_performance_list snippet

# We need to build a list (called performance) 1st element will be how many 0's in score
# 2nd element will be how many 1's and so on
for i in range(11): #i will run from 0 to 10 (these are the valid score values)
    #use count_items function to see how many matching scores we have
    this_score_tally=count_items(i, scores)  #1st time round loop, i will be 0, next time 1 etc
    performance.append(this_score_tally)