python timeit

 1 # -*- coding: utf-8 -*-
 2 # @author: Tele
 3 # @Time  : 2019/04/20 下午 3:52
 4 # timeit可以用来测试代码执行效率
 5 import timeit
 6 
 7 
 8 def test1():
 9     li = list()
10     for i in range(0, 10000):
11         li.append(i)
12 
13 
14 def test2():
15     li = list()
16     for i in range(0, 10000):
17         li.insert(0, i)
18 
19 
20 timer1 = timeit.timeit("test1()", "from __main__ import test1", number=1000)
21 print("append:", timer1)  # append: 1.1960364283501856 效率更高
22 timer2 = timeit.timeit("test2()", "from __main__ import test2", number=1000)
23 print("insert:", timer2)  # insert: 31.762624102166527