Python列表按降序排序
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Python list sort in descending order
提问by Rajeev
How can I sort this list in descending order?
如何按降序对这个列表进行排序？
timestamp = [
"2010-04-20 10:07:30",
"2010-04-20 10:07:38",
"2010-04-20 10:07:52",
"2010-04-20 10:08:22",
"2010-04-20 10:08:22",
"2010-04-20 10:09:46",
"2010-04-20 10:10:37",
"2010-04-20 10:10:58",
"2010-04-20 10:11:50",
"2010-04-20 10:12:13",
"2010-04-20 10:12:13",
"2010-04-20 10:25:38"
]
采纳答案by Ignacio Vazquez-Abrams
In one line, using a lambda:
在一行中，使用一个lambda：
timestamp.sort(key=lambda x: time.strptime(x, '%Y-%m-%d %H:%M:%S')[0:6], reverse=True)
Passing a function to list.sort:
将函数传递给list.sort：
def foo(x):
return time.strptime(x, '%Y-%m-%d %H:%M:%S')[0:6]
timestamp.sort(key=foo, reverse=True)
回答by Marcelo Cantos
This will give you a sorted version of the array.
这将为您提供数组的排序版本。
sorted(timestamp, reverse=True)
If you want to sort in-place:
如果要就地排序：
timestamp.sort(reverse=True)
回答by Russell Dias
Since your list is already in ascending order, we can simply reverse the list.
由于您的列表已经按升序排列，我们可以简单地反转列表。
>>> timestamp.reverse()
>>> timestamp
['2010-04-20 10:25:38',
'2010-04-20 10:12:13',
'2010-04-20 10:12:13',
'2010-04-20 10:11:50',
'2010-04-20 10:10:58',
'2010-04-20 10:10:37',
'2010-04-20 10:09:46',
'2010-04-20 10:08:22',
'2010-04-20 10:08:22',
'2010-04-20 10:07:52',
'2010-04-20 10:07:38',
'2010-04-20 10:07:30']
回答by Wolph
You can simply do this:
你可以简单地这样做：
timestamp.sort(reverse=True)
回答by mostafa elmadany
you simple type:
你简单的类型：
timestamp.sort()
timestamp=timestamp[::-1]
回答by I_code
Here is another way
这是另一种方式
timestamp.sort()
timestamp.reverse()
print(timestamp)
