来源:https://xidianwlc.gitbooks.io/python-data-structrue-and-algrothms/content/2.%E7%AE%97%E6%B3%95%E5%88%86%E6%9E%90/2.6.%E5%88%97%E8%A1%A8/
参考学习
def test1(): l=[] for i in range(1000): l=l+[i] def test2(): l=[] for i in range(1000): l.append(i) def test3(): l=[i for i in range(1000)] def test4(): l=list(range(1000)) from timeit import Timer #导入模块 t1=Timer('test1()','from __main__ import test1') print('concat',t1.timeit(number=1000),'milliseconds')