Python 2 to the power of n

print("This program will calculate 2 to the power of n")
print("How many powers do you want to calculate?")
loop = int(input("n = "))
value = 0

print()
for i in range(0, loop + 1):
    value = 2 ** i
    print("2 to the power",i,"is equal",value)

input()