import struct
import numpy as np
import time

s = b'\x23\xff' * (16777216 // 256)

arr = np.fromstring(s, dtype=np.uint16)

vals = {}
for i in range(2**16):
	vals[struct.pack('H', i)] = tuple(b'1' if e == '1' else b'0' for e in list("{:016b}".format(i)))

t = time.time()

for i in range(0, len(s), 2):
	vals[s[i:i+2]]
print("slicing and byte key: %.3f" % (time.time() - t))

vals = {}
for i in range(2**16):
	vals[i] = tuple(b'1' if e == '1' else b'0' for e in list("{:016b}".format(i)))

t = time.time()
for uint in arr:
	vals[uint]

print("numpy and int key: %.3f" % (time.time() - t))

vals = []
for i in range(2**16):
	vals.append(tuple(b'1' if e == '1' else b'0' for e in list("{:016b}".format(i))))

t = time.time()
for uint in arr:
	vals[uint]

print("numpy and list: %.3f" % (time.time() - t))