What is the equivalent python code for c program?

[Larz60+]

Time of execution:

import time
import numpy as np


def build_up():
    outbox = [0, 0, 64, 65]

    d = outbox[3] << 24 | outbox[2] << 16 | outbox[1] << 8 | outbox[0]
    member = float(d)

    print(f'Float output = {member}')

    return member

def build_up1():
    member = float(sum([i << s for i, s in zip([0, 0, 64, 65], [0, 8, 16, 24])]))
    print(member)

def build_up2():
    array = np.array((0, 0, 64, 65), np.int32) << np.array((0, 8, 16, 24), np.int32)
    d = np.sum(array)
    member = np.array((d, 0))
    member.dtype = np.float32
    print(member[0])

def main():
    t0 = time.clock()
    build_up()
    t1 = time.clock()
    print(f'time build_up: {t1-t0}')

    t0 = time.clock()
    build_up1()
    t1 = time.clock()
    print(f'time build_up1: {t1-t0}')


    t0 = time.clock()
    build_up2()
    t1 = time.clock()
    print(f'time build_up2: {t1-t0}')

if __name__ == '__main__':
    main()

Output:
Float output = 1094713344.0
time build_up: 1.8943810864992326e-05
1094713344.0
time build_up1: 6.911930991280987e-06
12.0
time build_up2: 6.348736614213645e-05

Build_up1 wins