Install python in 64-bit Windows 7 and configure the numpy and matplotlib libraries and numpymatplotlib

Install python in 64-bit Windows 7 and configure the numpy and matplotlib libraries and numpymatplotlib

I,PythonInstallation

1. Download python2.7 ,:Http://www.python.org/Select the system version. I chose python2.7.6.

• Python-2.7.6rc1.amd64.msi

2. Click Install directly. you can install it in the python27 file under the d directory (this is your installation path, or you can select the installation path ).

3. Set the environment variables. In the "my computer" attribute, choose Advanced Settings> environment variable Settings> path, and add "; D: \ python27.

 

II,NumpyInstallation

In the win64 python2.7 environmentCmdWhen you use the "pip install numpy" command to install numpy, the system prompts "not an internal or external command.

There are two reasons:

• No pip environment path set
• Pip Not Installed

The complete installation steps are as follows:

1. Install pip

After installing the Python2.7 installation package, the scripts folder will not be generated many times in the Python2.7 installation directory (at least I re-installed it n times, which is unacceptable), resulting in no

Use pip.

It may be because of a problem with my installation package. We suggest you change the installation package first. If the problem persists after the installation package is changed, let's take a look at how I solved the problem, for reference only.

• Go to the official website to downloadEz_setup.pyFile.
• Go to the path where the ez_setup.py file is located in cmd and run the "Python ez_setup.py" command. After the command is complete, the scripts folder is generated.
• Switch to the scriptsfolder, install pips, and enter the command "easy_install.exe pip ".
• Then configure the environment variables. Add to path... \ Python27 \ ScriptsThis path.

2. Download numpy

InHttp://www.lfd.uci.edu /~ Gohlke/pythonlibs/# numpy Select the corresponding system version to download:

• Numpy route 1.13.1 + mkl route cp27 route cp27m route win_amd64.whl

Because the file suffix is ". whl", you cannot directly double-click to install it. Therefore, we need to install wheel first.

3. Install wheel

Enter the "pip install wheel" command in cmd to complete the installation.

4. Install numpy

C: \ Users \ Administrator> pip install D: \ python27 \ numpy-1.9.2 + mkl-cp27-none-win_amd64.whl

If an error occurs during installation:

"UnicodeDecodeError: 'ascii 'codec can't decode byte 0xc4 in position 33: ordinal not in range (128 )"

Refer to"Solve Python UnicodeDecodeError".

5. verify whether the installation is successful

>>> From numpy import *

If no error is reported, the installation is successful.

 

III,MatplotlibInstallation

1. Download matplotlib fromHttp://www.lfd.uci.edu /~ Gohlke/pythonlibs/# matplotlibDownload the corresponding version.

• Matplotlib-1.5.3-cp27-cp27m-win_amd64.whl

2. Install matplotlib

C: \ Users \ Administrator> pip install D: \ python27 \ matplotlib-1.5.3-cp27-cp27m-win_amd64.whl

3. verify whether the installation is successful

 

1 from pylab import *2 3 n = 84 X,Y = np.mgrid[0:n,0:n]5 quiver(X,Y), show()

 

The execution result is as follows:

 

By now, all installation is complete.