Python 不同列表时间测试
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2023-12-25 09:12:21
1 import timeit 2 import threading 3 4 def test1(): 5 l = [] 6 for i in range(1000): 7 l = l + [i] 8 9 10 def test2(): 11 l = [] 12 for i in range(100... ......
1 import timeit 2 import threading 3 4 def test1(): 5 l = [] 6 for i in range(1000): 7 l = l + [i] 8 9 10 def test2(): 11 l = [] 12 for i in range(1000): 13 l.append(i) 14 15 16 def test3(): 17 l = [i for i in range(1000)] 18 19 20 def test4(): 21 l = list(range(1000)) 22 26 t1 = timeit.timer("test1()","from __main__ import test1") 27 print("concat", t1.timeit(number = 1000),"milliseconds") 28 29 t2 = timeit.timer("test2()","from __main__ import test2") 30 print("append", t2.timeit(number = 1000),"milliseconds") 31 32 t3 = timeit.timer("test3()","from __main__ import test3") 33 print("comprehension", t3.timeit(number = 1000),"milliseconds") 34 35 t4 = timeit.timer("test4()","from __main__ import test4") 36 print("listrange", t4.timeit(number = 1000),"milliseconds")
concat 2.0353527 milliseconds append 0.14437619999999995 milliseconds comprehension 0.05449919999999997 milliseconds listrange 0.03860090000000005 milliseconds