n = int(input())
L1 = []
L2 = []
for _ in range(n):
L1.append(input())
for _ in range(n):
L2.append(input())
def merge_list(L1,L2):
L = []
for v1,v2 in zip(L1,L2):
L.append(v1)
L.append(v2)
return L
for i in merge_list(L1,L2):
print(i)
def getScores(n):
scores = n * [0]
for i in range (n):
scores[i] = float(input())
return scores
def meanScore(scores):
mean_score = sum(scores)/len(scores)
return mean_score
n = int(input())
scores = getScores(n)
print("%.2f" % meanScore(scores))
不用sum和len函数也可以
def meanScore(scores):
mean_score = 0
i = 0
for v in scores:
mean_score += v
i += 1
mean_score /= i
return mean_score
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