from time import time
from sys import getsizeof

a,b,c = 0,0,0
D = {a:0, b:0, c:0}
N = 1000_000
stt = time()
for i in range(N): a,b,c = i, i+1, i+2
print(time()-stt)

stt = time()
for i in range(N): D[a], D[b], D[c] = i, i+1, i+2
print(time()-stt)    

print(getsizeof(a), getsizeof(b), getsizeof(c))
print(getsizeof(D[a]), getsizeof(D[b]), getsizeof(D[c]))
print(getsizeof(D))