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kanto = [73, 67, 43]
johto = [91, 88, 64]
hoenn = [87, 134, 37]

#represents temp., rainfall, humidity data repectively

w1, w2, w3 = 0.3, 0.2, 0.5
weights = [0.3, 0.2, 0.5]
for item in zip(kanto, weights):
    print (item)
(73, 0.3) (67, 0.2) (43, 0.5)
for x, w in zip(kanto, weights):
    print(x)
    print(w)
73 0.3 67 0.2 43 0.5
def crop_yield(region, weights):
    result = 0
    for x, w in zip(region, weights):
        result += x * w
        
    return result
crop_yield(kanto, weights)
56.8