mutual_appearances and appearances needed to be sum. So len() is the wrong operator here. Also you didnt count those which exists in table 2 but not in table 1. Here is how I would do it:
def frequency_comparison(table1, table2):
appearances = 0
mutual_appearances = 0
for key in table1:
if key in table2:
value1 = table1.get(key)
value2 = table2.get(key)
if value2:
if value1 > value2:
mutual_appearances += value2
appearances += value1
else:
mutual_appearances += value1
appearances += value2
else:
appearances += value1
else:
appearances = table1.get(key)
keys_not_in_table1 = [key for key in table2 if key not in table1]
for key in keys_not_in_table1:
appearances += table2.get(key)
return mutual_appearances / appearances
https://github.com/DeadMarshall/codecademy/blob/6f67a46034f5b5584c9f0e26fd028b57f73e80b6/bstinsonMurder%2BMystery.py#L228-L244
mutual_appearances
andappearances
needed to be sum. Solen()
is the wrong operator here. Also you didnt count those which exists in table 2 but not in table 1. Here is how I would do it: