# 列表可以调用sort()方法,并会改变自身的值,返回值为Nonea=[1,5,7,3,4]a.sort()print(a)# [1, 3, 4, 5, 7]b=a.sort()print(b)# None# 元组不支持sort()方法c=(1,5,7,3,4)c.sort()print(c)# AttributeError: 'tuple' object has no attribute '
key=None, reverse=False) -- stable sort *IN PLACE*; cmp(x, y) -> -1, 0, 1>>> # Python3>>> help(list.sort)Help on method_descriptor:sort(...) L.sort(key=None, reverse=False) -> None -- stable sort *IN PLACE*
AI代码解释 >>>string_number_value='34521'>>>string_value='I like to sort'>>>sorted_string_number=sorted(string_number_value)>>>sorted_string=sorted(string_value)>>>sorted_string_number['1','2','3','4','5']>>>sorted_string[' ',' ',' ','I','e','i','k','l','o','o...
AttributeError: 'tuple' object has no attribute 'sort' >>> values_to_sort = list(tuple_val) >>> returned_from_sort = values_to_sort.sort() >>> print(returned_from_sort) None >>> print(values_to_sort) [1, 3, 5, 5] When you try calling .sort() with a tuple, you get an...
You have a list of objects that you need to sort according to one attribute of each object, as rapidly and portably as possible. Solution In this case, the obvious approach is concise, but quite slow: def sort_by_attr_slow(seq, attr): def cmp_by_attr(x, y, attr=attr): return cmp...
AttributeError Raised on the attribute assignment or reference fails. EOFError Raised when the input() function hits the end-of-file condition. FloatingPointError Raised when a floating point operation fails. GeneratorExit Raised when a generator's close() method is called. ...
排序问题是所有程序员一定会遇到的问题,Python内置的排序工具sort()和sorted()功能强大,可以实现自定义的复杂式排序。平时我们使用两个函数可能没有仔细研究过它们的区别,随想随用了。但实际上二者还是有很大的去别的,在一些场景中不同互换使用。 本篇将会介绍如何对不同数据结构中的各种类型的数据进行排序,自定义顺...
sort是列表自带函数,其他数据类型不可用,另外它会改变原列表,返回None;sorted的适用范围广泛,不会改变原列表,返回排序后的新列表。 >>> s=(3,2,1)>>> s.sort()Traceback (most recent call last):File"<pyshell#10>", line1,in<module>s.sort()AttributeError:'tuple'object has no attribute'sort'>...
A sort is stable if it guarantees not to change the relative order of elements that compare equal — this is helpful for sorting in multiple passes (for example, sort by department, then by salary grade).其大意为:sorted函数返回一个新的可迭代的列表,sorted函数有两个可选参数,必须将其指定为...
AttributeError: 'tuple' object has no attribute 'sort' >>> sorted(b) [2, 3, 5, 7, 8] 1. 2. 3. 4. 5. 6. 7. 8. 三、key参数/函数 从python2.4开始,list.sort()和sorted()函数增加了key参数来指定一个函数,此函数将在每个元素比较前被调用。 例如通过key指定的函数来忽略字符串的大小写...