python3 sort list

1、 对元素指定的某一部分进行排序,关键字排序

s = ['release.10.txt','release.1.txt','release.2.txt','release.14.txt','release.3.txt','release.20.txt','release.5.txt']

 

2、按照文件名种数字的大小升序排序。要用到key

sorted(s, key=lambda d : int(d.split('.')[1]))

['release.1.txt', 'release.2.txt', 'release.3.txt', 'release.5.txt', 'release.10.txt', 'release.14.txt', 'release.20.txt']

 

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