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反向双重排序(Double sort with reverse)

 很容易实现常规的双重排序：  
pairs = [(1, 2), (2, 1), (1, 3), (2, 4), (3, 1)]

sorted(pairs,key=lambda x: (x[0],x[1]))
# out: [(1, 2), (1, 3), (2, 1), (2, 4), (3, 1)]
 
 我感兴趣的是如何以相反的顺序使用第二个元素。 这可以通过首先将对由第一项分组然后将已排序的第二项添加到一起来容易地实现。 我使用itertools.groupby和defaultdict实现了这两个。 尽管如此，它仍然比常规的双重排序复杂得多，所以我想知道，如果有一个巧妙的技巧可以用更简洁的方式来做到这一点。  
double_sort(pairs)
# out: [(1, 3), (1, 2), (2, 4), (2, 1), (3, 1)]
 
 PS！ 我知道如何使用numpy.argsort这样做，并且最想看到标准的lib方法。 

It is easy to implement a regular double sort: 
pairs = [(1, 2), (2, 1), (1, 3), (2, 4), (3, 1)]

sorted(pairs,key=lambda x: (x[0],x[1]))
# out: [(1, 2), (1, 3), (2, 1), (2, 4), (3, 1)]
 
I am interested how to do it with the second elements in the reverse order. This can be easily implemented by grouping the pairs by the first item at first and then adding the the sorted second items together. I have implemented this both using itertools.groupby and defaultdict. Still, it remains far more complex, than the regular double sort, so i wonder, if there is a neat trick to do it in a more concise way. 
double_sort(pairs)
# out: [(1, 3), (1, 2), (2, 4), (2, 1), (3, 1)]
 
PS! I know how to do it with numpy.argsort and would mostly like to see a standard lib approach.

原文：https://stackoverflow.com/questions/14294612

更新时间：2023-12-24 12:12

最满意答案

 请更改以下代码行：  
String storageConnectionString =
            "DefaultEndpointsProtocol=http;" +
            "AccountName=accountname" + 
            "AccountKey="+encodedKey+
           "EndpointSuffix=table.core.windows.net;"; 
 
 至  
String storageConnectionString =
            "DefaultEndpointsProtocol=http;" +
            "AccountName=accountname" + 
            ";AccountKey="+encodedKey+
           ";EndpointSuffix=core.windows.net;"; 
 
 基本上在您的代码中， AccountName ， AccountKey和EndpointSuffix之间没有分隔符（ ; ）。 此外，如果您要连接到标准端点（ core.windows.net ），则无需在连接字符串中指定EndpointSuffix 。  
 最后，请确保帐户密钥正确无误。 

Please change the following line of code: 
String storageConnectionString =
            "DefaultEndpointsProtocol=http;" +
            "AccountName=accountname" + 
            "AccountKey="+encodedKey+
           "EndpointSuffix=table.core.windows.net;"; 
 
To 
String storageConnectionString =
            "DefaultEndpointsProtocol=http;" +
            "AccountName=accountname" + 
            ";AccountKey="+encodedKey+
           ";EndpointSuffix=core.windows.net;"; 
 
Essentially in your code, there was no separator (;) between AccountName, AccountKey and EndpointSuffix. Also, if you're connecting to standard endpoint (core.windows.net), you don't need to specify EndpointSuffix in your connection string. 
Lastly, please ensure that the account key is correct.

反向双重排序(Double sort with reverse)

最满意答案

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