In python, how do I create two index slicing for my own matrix class? -

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I'm trying to write my own matrix class in Python, in fact, for testing purposes this matrix class Is in C ++ and I am using SWIG to interface between two. However, for this question, it may be easy to consider the pure Python implementation of the matrix class.

I want to be able to call this matrix class and want to use two-indexed slicing action. For example, after we created 4x4 matrix of people, 

  & gt; & Gt; & Gt; A = matrix (4,4,1)   
 I want to be able to get sub2x2 matrix:  
  & gt; & Gt; & Gt; A [1: 2,1: 2]   
 I have heard about the code <__> Hollis __ , but it seems that this only allows for single skiing Gives, e.g.  One [1: 2] . How can I do a two-index skiing so that I can call  A [i: j, l: k] ?  
 Thank you!   
 
 
 Note that  __ getslice __  dislikes so consider the following minimum example Do:  
  square fu: def __getitem __ (auto, * args): print args f = foo () f [1: 2,2: 4]   
 It will print:  
  ((piece (1, 2, none), piece (2, 4, none)),   < p> If you have a look at, you will see that there are  piece  objects:  
 
 .. Slice is expanded to extend the slice. Special read-only attributes:  start  is bottom bound;  paused  is upper bound;  step  is the phase value; Everybody is left  none  These types of attributes can be of any type.   
 Here it should be clear how to implement your 2 index slice handling.

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