python练习题二

1、计算成绩

scores = {"baidu":32,"google":78,"weixin":95,"facebook":68,"aws":94,"ali":97}
for k,v in scores.items():
    if(v == max(scores.values())):
        print(k,v)

for k,v in scores.items():
    if(v == min(scores.values())):
        print(k,v)
so = []       
for v in scores.values():
    so.append(v)
    
avg = sum(so)*1.0/len(so)
print(round(avg,2))

ali 97
baidu 32
77.33

　　

2、找素数

import random
notprime = []
prime = []
li = [random.randint(1,99) for i in range(100)]
print("List numbers are: ",li)
for i in range(len(li)):
    for j in range(2,li[i]-1):
        if (li[i]%j != 0):
            continue
        else:
            notprime.append(li[i])
            break
#print(notprime)
prime = set(li) - set(notprime)
print("Prime numbers are: ",list(prime))

List numbers are:  [60, 63, 88, 66, 30, 99, 63, 51, 35, 18, 48, 90, 21, 28, 3, 63, 68, 89, 96, 42, 32, 1, 25, 42, 56, 97, 20, 90, 86, 21, 1, 79, 97, 44, 54, 66, 77, 62, 98, 70, 37, 38, 82, 24, 17, 54, 42, 92, 6, 55, 72, 1, 93, 25, 97, 72, 8, 2, 27, 45, 48, 51, 82, 25, 55, 76, 53, 26, 34, 53, 9, 45, 13, 91, 44, 62, 59, 75, 58, 46, 51, 45, 44, 38, 20, 37, 30, 83, 34, 73, 48, 68, 50, 75, 93, 60, 77, 71, 61, 52]
Prime numbers are:  [1, 2, 3, 97, 37, 71, 73, 13, 79, 17, 83, 53, 89, 59, 61]