How to use python map function to generate the first 100 powers of two starting at 0 and exclusive of 100?

Question

def map_twos():
    def pwr(x):
        return 2**x 
    map(pwr, range(0, 100))
    print pwr.get[2]
    return pwr

What is wrong. I don't know how do I use map function to get the required answer

Answer 1

pwr is a function. Even after you map it over a list, pwr is still a function. map(pwr, range(0, 100)) is the list you want. You can store it in a variable:

powers = map(pwr, range(0, 100))
print powers[2]
return powers