from timeit  import Timerdef t1():    li = []    for i in range(10000):        li.append(i)def t2():    li = []    for i in range(10000):            li +=  [i]def t3():    li = [i for i in range(10000)]def t4():    li = list(range(10000))def t5():    li = []    for i in range(10000):        li.extend([i])def t6():    li=[]    for i in range(10000):        li.insert(0,i)timer1 = Timer("t1()","from __main__ import t1")print("append:", timer1.timeit(1000))timer2 = Timer("t2()","from __main__ import t2")print("+:", timer2.timeit(1000))timer3 = Timer("t3()","from __main__ import t3")print("[i for i in range]:", timer3.timeit(1000))timer4= Timer("t4()","from __main__ import t4")print("list(range()):", timer4.timeit(1000))timer5= Timer("t5()","from __main__ import t5")print("extend:", timer5.timeit(1000))timer6= Timer("t6()","from __main__ import t6")print("insert:", timer6.timeit(1000))

运行结果：

append: 1.253803191

+: 1.6207985829999998

[i for i in range]: 0.4072384659999999

list(range()): 0.22763614999999993

extend: 1.818385053

insert: 31.748338614999998