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  • numpy安装

    Python34安装NumPy
    numpy 准确地说提供了一个在python中做科学计算的基础库,侠义地讲它重在数值计算,甚至可以说是用于多维数组处理的库;而 scipy 则是基于numpy,提供了一个在python中做科学计算的工具集,也就是说它是更上一个层次的库。 
    下面只介绍numpy的安装方法(scipy一样)


    本机环境:win7, 64位 + python3.4


    1、下载对应版本NumPy(我用的python3.4下载对应numpy-1.9.2+unoptimized-cp34-none-win amd64.whl) 

    http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy

    python3.4 Delbert默认版本为3.4,第二步不用执行。2.7的就得安装wheel

    2、由于下载下来的包是wheel格式的,需要wheel支持。所以需要先通过cd命令切换到python安装路径下的Script文件夹,输入 pip install wheel 来安装wheel。 

    C:Python34Scripts>pip install wheel 
    You are using pip version 6.0.8, however version 7.0.3 is available. 
    You should consider upgrading via the 'pip install --upgrade pip' command. Collecting wheel 
      Downloading wheel-0.24.0-py2.py3-none-any.whl (63kB) 
        100% |################################| 65kB 113kB/s 
    Installing collected packages: wheel 

    Successfully installed wheel-0.24.0 

    3、 pip install 来进行安装 

    C:Python34Scripts>pip install C:Python34 umpy-1.9.2+unoptimized-cp34-none-w in32.whl 
    You are using pip version 6.0.8, however version 7.0.3 is available. 
    You should consider upgrading via the 'pip install --upgrade pip' command. Processing c:python34 umpy-1.9.2+unoptimized-cp34-none-win32.whl 
    Installing collected packages: numpy Successfully installed numpy-1.9.2 

    4、进入python运行环境(cmd) 


    C:Python34Scripts>C:Python34python.exe
    Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) [MSC v.1600 32 bit (In
    tel)] on win32
    Type "help", "copyright", "credits" or "license" for more information.
    >>>

    在python下导入numpy 
    >>>; from numpy import * 

    安装完成,可以测试了。 
    4*4的随机数组: 

    >>> random.rand(4,4)
    array([[ 0.90056883,  0.10542202,  0.02104658,  0.45606525],
           [ 0.37256702,  0.38938058,  0.81695404,  0.3021916 ],
           [ 0.02081778,  0.65920287,  0.18204678,  0.70915739],
           [ 0.74607969,  0.9682355 ,  0.49196832,  0.74588514]])
    >>>

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  • 原文地址:https://www.cnblogs.com/david-zhao/p/5110013.html
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