如何按python降序对整数列表进行排序
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How to sort integer list in python descending order
提问by Math4CT
I have tried to figure this out in different ways, to no success. I keep getting ascending order sort, rather than descending order when I print.
我试图以不同的方式解决这个问题，但没有成功。当我打印时，我一直在进行升序排序，而不是降序排序。
ListB = [24, 13, -15, -36, 8, 22, 48, 25, 46, -9]
sorted(ListB, key=int, reverse=True)
print sorted(ListB)
采纳答案by Andy
You are printing the list sorted ascending:
您正在打印按升序排序的列表：
print sorted(ListB)
If you want it descending, put your print statement on the previous line (where you reverse it)
如果您希望它降序，请将您的打印语句放在前一行（您将其反转的位置）
print sorted(ListB, key=int, reverse=True)
Then remove your final print statement.
然后删除您的最终打印语句。
Example:
例子：
>>> ListB = [24, 13, -15, -36, 8, 22, 48, 25, 46, -9]
>>> print sorted(ListB, key=int, reverse=True)
[48, 46, 25, 24, 22, 13, 8, -9, -15, -36]
回答by Jakob Bowyer
reversed(sorted(listb))
This creates an iterable going from 48 -> -36
这将创建一个从 48 -> -36 开始的可迭代对象
回答by óscar López
Try this, it'll sort the list in-place in descending order (there's no need to specify a key in this case):
试试这个，它会按降序对列表进行就地排序（在这种情况下不需要指定键）：
listB = [24, 13, -15, -36, 8, 22, 48, 25, 46, -9]
listB.sort(reverse=True) # listB gets modified
print listB
=> [48, 46, 25, 24, 22, 13, 8, -9, -15, -36]
Alternatively, you can create a new sorted list:
或者，您可以创建一个新的排序列表：
listB = [24, 13, -15, -36, 8, 22, 48, 25, 46, -9]
listC = sorted(listB, reverse=True) # listB remains untouched
print listC
=> [48, 46, 25, 24, 22, 13, 8, -9, -15, -36]
回答by SimplyMagisterial
ListB = [24, 13, -15, -36, 8, 22, 48, 25, 46, -9]
ListB = sorted(ListB, key=int, reverse=True)
print ListB
Sorted does not change the variable passed to it. So if you want to do anything with them you have to store sorted output into a variable.
Sorted 不会改变传递给它的变量。所以如果你想对它们做任何事情，你必须将排序的输出存储到一个变量中。
回答by Andy
u should have combined these two lines of code together, using this instead.
你应该把这两行代码组合在一起，用这个来代替。
print sorted(ListB, key=int, reverse=True)
result:
结果：
[48, 46, 25, 24, 22, 13, 8, -9, -15, -36]
