In [1]:
import numpy as np
import matplotlib.pyplot as plt
In [2]:
lst = [1,3,4,1,6]

sum(lst)
Out[2]:
15
In [3]:
np.sum(lst)
Out[3]:
15
In [4]:
np.prod(lst)
Out[4]:
72
In [5]:
np.cumsum(lst)

plt.plot(lst, 'rs-')
plt.plot(np.cumsum(lst),'bo-')

plt.legend(['set','cumsum'])
plt.show()
In [6]:
a = np.arange(1,6)

suma = np.sum(a)
suma2 = np.sum(a**2)

ans1 = suma / suma2
ans2 = 1 / suma

print('Option 1 = %s\nOption 2 = %s' %(ans1, ans2))

Option 1 = 0.2727272727272727
Option 2 = 0.06666666666666667
In [7]:
proda = np.prod(a)
proda2 = np.prod(a**2)

ans1 = proda / proda2
ans2 = 1 / proda

print('Option 1 = %s\nOption 2 = %s' %(ans1, ans2))

Option 1 = 0.008333333333333333
Option 2 = 0.008333333333333333