python 对字符串列表按字符串数字大小排序 sorted_python sort string规则 个位数小于十位数

a
>>> ['7:00', '8:00', '9:20', '10:00', '11:00', '12:00', '12:50', '14:00', '14:50', '16:00', '17:00', '17:50', '21:00', '22:30', '9:00', '10:30', '11:00', '12:30', '14:00', '15:00', '16:00', '17:10', '18:00', '19:00', '21:00', '22:30']
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2

b = sorted(a, key=lambda x: int(x[:-3]+x[-2:]))
b
>>> ['7:00', '8:00', '9:00', '9:20', '10:00', '10:30', '11:00', '11:00', '12:00', '12:30', '12:50', '14:00', '14:00', '14:50', '15:00', '16:00', '16:00', '17:00', '17:10', '17:50', '18:00', '19:00', '21:00', '21:00', '22:30', '22:30']
1
2
3

参考：Python sorted函数详解(高级篇)