('name','age','sex')'sex,age,name'>>> >>> '{2},{1},{1}'.format('name','age','sex')'sex,age,age'>>> #在Python3.5.1...版本中,如果format_spec不是一个空字符串,object()....>>> m = []>>> n = [1,2,3]>>> l = [1,'']>>> all(m)True>>> all(n)True>>> all(l)False>>>
any(iterable):如果