'numpy.ndarray' python.list

朴灿烈づ我的快乐病毒、 2022-07-13 12:10 215阅读 0赞

\\>python  
Python 2.7.11 (v2.7.11:6d1b6a68f775, Dec  5 2015, 20:32:19) \[MSC v.1500 32 bit (  
Intel)\] on win32  
Type "help", "copyright", "credits" or "license" for more information.  
>>> a = arange(15).reshape(3, 5)  
Traceback (most recent call last):  
  File "<stdin>", line 1, in <module>  
NameError: name 'arange' is not defined  
>>> from numpy  import \*  
>>> a = arange(15).reshape(3, 5)  
>>> a  
array(\[\[ 0,  1,  2,  3,  4\],  
       \[ 5,  6,  7,  8,  9\],  
       \[10, 11, 12, 13, 14\]\])  
>>> a.shape  
(3, 5)  
>>> b = arange(60).reshape(5,4,3)  
>>> b  
array(\[\[\[ 0,  1,  2\],  
        \[ 3,  4,  5\],  
        \[ 6,  7,  8\],  
        \[ 9, 10, 11\]\],

\[\[12, 13, 14\],  
        \[15, 16, 17\],  
        \[18, 19, 20\],  
        \[21, 22, 23\]\],

\[\[24, 25, 26\],  
        \[27, 28, 29\],  
        \[30, 31, 32\],  
        \[33, 34, 35\]\],

\[\[36, 37, 38\],  
        \[39, 40, 41\],  
        \[42, 43, 44\],  
        \[45, 46, 47\]\],

\[\[48, 49, 50\],  
        \[51, 52, 53\],  
        \[54, 55, 56\],  
        \[57, 58, 59\]\]\])  
>>> a.shape  
(3, 5)  
>>> b.shape  
(5, 4, 3)  
>>> a.ndim  
2  
>>> b.ndim  
3  
>>> a.dtype  
dtype('int32')  
>>> a.dtype.name  
'int32'  
>>> b.dtype.name  
'int32'  
>>> a.itemsize  
4  
>>> b.itemsize  
4  
>>> a.size  
15  
>>> b.size  
60  
>>> type(a)  
<type 'numpy.ndarray'>  
>>> type(b)  
<type 'numpy.ndarray'>  
>>> c= array(\[6, 7, 8\])  
>>> c  
array(\[6, 7, 8\])  
>>> type(c)  
<type 'numpy.ndarray'>  
>>> d= \[6, 7, 8\]  
>>> d  
\[6, 7, 8\]  
>>> type(d)  
<type 'list'>  
>>>

'numpy.ndarray' python.list

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