Calculate the electricity bill by entering unit in Python

u=int(input(“Enter unit :”))

if u>=1 and u<100:

    pu=3

elif u>=100 and u<500:

    pu=5

elif u>=500 and u<1000:

    pu=8

elif u>=1000:

    pu=10

bill=u*pu

print(“Total units:”,u)

print(“Per unit rate:”,pu)

print(“Total Bill:”,bill)