python 计数器Counter

from collections import Counter
colours=(
    ('Yasoob','Yellow',1), 
    ('Ali','Blue',2), 
    ('Arham','Green',3), 
    ('Ali','Black',4), 
    ('Yasoob','Red',5), 
    ('Ahmed','Silver',6),
    ('Ahmed','Red',7),
)

favs = Counter((name,colour) for name, colour,value in colours)
unions=Counter(name for name, colour,value in colours)
print(favs)
print(unions)