import time
n= 100000
start_time = time.time()
l = []
for i in range(n):
l = l + [i * 2]
print(time.time() - start_time)
start_time = time.time()
l = []
for i in range(n):
l += [i * 2]
print(time.time() - start_time)
start_time = time.time()
l = []
for i in range(n):
l.append(i * 2)
print(time.time() - start_time)
26.3175041676
0.0305399894714
0.0207479000092
Call