python与经济金融类结合的问题

li = [4.5, 6.5, 3.5, 6.3, 7.2, 8.4]
for i,v in enumerate(li):
    if v>5:
        print("大于5%的是第",i+1,"个，值是",v)

第二个

import random
import numpy as np
a = [random.randint(1,100) for j in range(30)]
b = [random.randint(1,100) for j in range(30)]
print(a)
print(b)
print('a的均值:',np.mean(a))
print('a的方差:',np.var(a))
print('b的均值:',np.mean(b))
print('b的方差:',np.var(b))

lst=[4.5,6.5,3.5,6.3,7.2,8.4]
for i,r in enumerate(lst):
    if r>5:
        print(i+1)

import random
import numpy as np
arr1=np.array([random.uniform(1,100) for i in range(30)])
arr2=np.array([random.uniform(1,100) for i in range(30)])
print(arr1.mean(),arr1.var())
print(arr2.mean(),arr2.var())