import numpy as np

arr = np.array([1, 2, 3, 4])
x = np.prod(arr)
print(x)
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arr1 = np.array([1, 2, 3, 4])
arr2 = np.array([5, 6, 7, 8])
x = np.prod([arr1, arr2])
print(x)
###########
arr1 = np.array([1, 2, 3, 4])
arr2 = np.array([5, 6, 7, 8])

newarr = np.prod([arr1, arr2], axis=1)

print(newarr)
##########
arr = np.array([5, 6, 7, 8])

newarr = np.cumprod(arr)

print(newarr)