str.format() Used to output a string in a given fomat 1 'I'm {}, a year {} studnet'.format('Wang Xiaoyang', 4) Limit output digit length: 12345 def (s): return '{:02}:{:02}:{:02}'.format(s//3600, s%3600//60, s%3600%60) print(make_readable(600))'00:10:00' 赞微海报分享
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