Tips -- solve the problem of no module named matlab.engine

1. Problem description

Use matlab Signal processing is a very comfortable thing , But if we want to use python To call MATLAB The result is not happy ？python It's really called MATLAB The library of , That's it matlab.engine modular , But it will appear when used “No module named 'matlab.engine” The problem of ：

This is because matlab The question of support , frequently-used matlab The version corresponds to python The version number is ：

• Matlab 2016a The highest support python 3.4
• Matlab 2016b,2017a The highest support python 3.5
• Matlab 2017b The highest support python 3.6
• The rest MATLAB Supported by python The version can be installed in the software installation path ( Take my path )

G:\Program Files\MATLAB\R2017b\extern\engines\python

Medium “setup.py” You can see in the file ：

Above, MATLAB 2017b Of setup file , It supports python2.7, 3.4, 3.5, 3.6 edition

2. resolvent

• First of all, make sure that MATLAB Whether the version supports the python edition , If not , Suitable can be installed matlab edition , Or change python Version of .
  matlab All versions of the cracked version can be found online , Here we use anaconda As an example to demonstrate how to replace python edition ：
  The first step is to create a new virtual environment , With python3.6 For example

conda create -n py36 python=3.6

Enter the virtual environment ：

activate py36

download nb_conda To give jupyter notebook use

conda install nb_conda

such python3.6 The basic environment will be built , The rest is to install some packages you need

• If MATLAB Version support used python edition , You need to do something to MATLAB And python Just go “ binding ”
  First step ：“win+R” Input “cmd” Open the command line ：
  
  The second step ： Change the path to MATLAB The installation path , namely “setup.py” The path of the file ：
  
  The third step ： Open up our python Environmental Science , Here we take the newly established py36 For example ：
  
  Step four ： Enter the following commands in turn ：

python setup.py build --build-base="builddir" install
 
python setup.py install --prefix="installdir"
 
python setup.py build --build-base="builddir" install --prefix="installdir"
 
python setup.py install --user

And then it's done , We can test it , Find out “matlab.engine” Loading successful ：