Numpy详解

#! /user/bin/env python#encoding=utf-8__author__ = 'chw'import timeimport numpy as npimport pandas as pdsimport scipyimport sklearnimport matplotlib as pltnarry1=np.arange(5)print narry1narry=np.array((1,2,3,4))# narry.ndim   表示维度# narry.shape  表示（行，列）# narry.dtype  表示数据类型# narry.itemsize 表示元素的大小# narry.nbytes 表示总的大小print narryprint narry.ndimprint narry.shapeprint narry.dtypeprint narry.itemsizeprint narry.nbytes

结果：

[0 1 2 3 4][1 2 3 4]1(4,)int32416

http://blog.sina.com.cn/s/blog_13bb711fd0102w68d.html
http://www.cnblogs.com/chaosimple/p/4153083.html
http://pandas.pydata.org/pandas-docs/stable/basics.html#basics
http://blog.csdn.net/sunny2038/article/details/8907736