推 suzuke:推 09/29 23:57
※ 編輯: uranusjr 來自: 114.32.81.146 (09/30 00:19)
推 mark038:Thanks! 10/01 11:31
一個方法是繼承 numpy.matrix
然後 override 它的 __str__ function
當你 print 一個非字串物件時, python 會呼叫這個 function 把物件轉成字串
舉個簡單的例子
>>> class MyList(list):
... def __str__(self):
... return '\t'.join([str(i) for i in self])
...
>>> a = [1, 2, 3]
>>> print(a)
[1, 2, 3]
>>> print(MyList(a))
1 2 3
>>>
要怎麼轉給 numpy.matrix, 以及怎麼寫成二維使用, 就留給你自己發揮了
當然一般輸出 csv 之類的格式都是寫到檔案, 直接另外寫兩層迴圈來輸出也很容易
不過這個方法的優點是, 配合 print 的重導向功能, 可以讓寫檔的程式碼變得很漂亮
※ 引述《mark038 (Mark)》之銘言：
: I can't type Chinese in the computer now. Sorry蔊: The following is my output if I print a matrix (I used numpy) from a
: generated m*n matrix.
: But I want to generate/print a tab delimited file for reading/opening excel.
: Could anybody provide a clever solution?
: Thanks!
: [[ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 0.
: 0. 0. 0. 0. 0. 0. 0. 0.]
: [ 0. 1. 0. 0. 0. 1. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
: 0. 0. 0. 0. 0. 0. 0. 1.]
: [ 0. 0. 4. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
: 0. 0. 0. 0. 0. 0. 0. 0.]
: [ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 1. 0.
: 0. 0. 0. 0. 0. 0. 0. 0.]
: [ 1. 0. 0. 0. 0. 0. 0. 1. 0. 1. 0. 0. 1. 0. 1. 0. 0. 1.
: 0. 0. 1. 1. 0. 0. 0. 0.]
: [ 0. 0. 0. 1. 0. 0. 0. 0. 1. 0. 3. 0. 0. 1. 0. 1. 0. 0.
: 1. 0. 0. 0. 1. 0. 0. 0.]
: [ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
: 0. 1. 0. 0. 0. 0. 0. 0.]
: [ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
: 0. 0. 0. 0. 0. 1. 0. 0.]
: [ 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
: 0. 0. 0. 0. 0. 0. 1. 0.]
: [ 0. 0. 0. 0. 1. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.
: 0. 0. 0. 0. 0. 0. 0. 0.]]
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