Question

How to implement the power function in Python

Answer 1

def mypow(base, exp):
    power = 1
 
    while True:
        if exp & 1:
            power *= base
        exp >>= 1
        if not exp:
            break
        base *= base
 
    return power
 
 
print(mypow(2, 3))  # 8
print(mypow(3, 3))  # 27
print(mypow(3, 2))  # 9
print(mypow(2, 2))  # 4
print(mypow(5.0, 2))  # 25
print(mypow(-2, 4)) # 16
 
 
 
'''
run:
 
8
27
9
4
25.0
16
 
'''

 

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