"No module named 'matlab.engine'; 'matlab' is not a package"

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Jeroen Vancraen
Jeroen Vancraen 2017-10-23
编辑： Tongyao 2024-7-10
Hi everyone,
I'm trying to set up a connection between my python and matlab scripts. However i'm having some difficulties with the matlab module for python. I'm using a windows 10 computer and followed these instructions to install the python API for matlab: https://www.mathworks.com/help/matlab/matlab_external/install-the-matlab-engine-for-python.html
I keep getting this error: "No module named 'matlab.engine'; 'matlab' is not a package"
The matlab module was succesfully installed using the latest version of pip.
I searched the internet but no given solution could help me. Any ideas?
Greetings,
Jeroen

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采纳的回答

Grace Kepler
Grace Kepler 2024-4-18
The first part of the error message ("No module named 'matlab.engine'") indicates an issue with importing matlab.engine. The second part of the error message ("'matlab' is not a package") generally indicates that you have a Python file named "matlab.py" on your Python path. To resolve this error, rename your file or move it to a location that is not on the Python path.
For other issues with importing matlab.engine see these links:
How do I resolve the error "ModuleNotFoundError: No module named 'matlabeng​ineforpyth​on3_X'"?
Python failing to import MATLAB Engine in a virtual environment

更多回答（13 个）

Stephan
Stephan 2018-1-15
Hi,
at last I was able to solve the problem for my case. After I have checked several times that the installation was successful: i.e. Matlab appears in the "Site packages" in the Python installation:
In Idle-> under "File"-> "Path Browser" Check whether the directory containing the MATLAB package is indeed on this path and verify that "MATLAB: Package" shows up when you expand that directory.
After this was the case, I found that my test file had the name "matlab.py". Since the import command of Python first searches for a corresponding py file and then after packages, I was able to solve the problem by renaming the file. Now it works perfectly.
This also explains why it worked on the command line with the direct input of the corresponding commands but did not work out of a development environment when I used my file called matlab.py.
  2 个评论
Ankit Jaiswal
Ankit Jaiswal 2020-2-13
This reply is very tough to understand. Not sure where you are talking about idle etc. Can you please explain it more clearly. Thanks.
Milena Mori
Milena Mori 2021-1-23
I had also named my file 'matlab.py' and after changing it, it finally worked! Thank you so much!

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Deepak Dhillon
Deepak Dhillon 2020-3-11
I also face the same problem. I have MATLAB 2019b installed, anaconda installed, and spyder installed. I guess there could be some path issues, but could not spot it exactly. Kindly help.
  5 个评论
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Rubem Pacelli
Rubem Pacelli 2021-12-16
编辑：Rubem Pacelli 2021-12-16
I could replicate it on Linux too. First, on the terminal, type
pip list | grep matlab
You should not see anything... You must to go to
[matlab_root_directory]/extern/engines/python
where [matlab_root_directory] is your installation directory. Then you simply type
sudo python setup.py install
Now, run again
pip list | grep matlab
You should see that there is a package whose name is
matlabengineforpython R2021a
where R2021a shall vary depending on your matlab version.

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Florian Ruther
Florian Ruther 2020-5-5
I just want to add what solved my problem.
I had to install the matlab engine with an admin account. Therefore the necessary files were put in the AppData\Local\Programs\Python\Python36 - folder of the admin account. After I copied everything from there to the corresponding folder of my user account it worked.
Vijaykumar Kudtalkar
Just found a simple way to solve this problem
run command as below in Matlab command prompt
cd (fullfile(matlabroot,'extern','engines','python'))
system('python setup.py install')
if it shows as below
running install
running build
running build_py
error: You do not have write permission in build\lib\matlab\engine
ans =
1
the go to installpath\R2021a\bin and provide write permission to the folder path including sub directories and then run the command in python command prompt
import matlab.engine
It worked for me.
Steven Lord
Steven Lord 2017-10-23
Which release are you using? Is it older than release R2014b? Note that the page you referenced states, in part: "Your system has a supported version of Python and MATLAB R2014b or later."
Jeroen Vancraen
Jeroen Vancraen 2017-10-23
I'm using R2017b student edition, and Python 3.5. These versions should be compatible no?
Greetings
diadochos
diadochos 2017-12-14
You could check if you have been successful installing the module. i.e. go to the directory that's explained in the URL you pasted: https://www.mathworks.com/help/matlab/matlab_external/install-the-matlab-engine-for-python.html
and run "python setup.py install".
In my case, with MATLAB R2015b release, I got the following error message:
OSError: MATLAB Engine for Python supports Python version 2.7, 3.3 and 3.4, but your version of Python is 3.6
Since you may have missed the message, you could try to install it again.
Stephan
Stephan 2017-12-26
编辑：Stephan 2017-12-27
Hi,
i have the same problem using Windows 10, Matlab 2017a and Python 3.5 (same using 2.7 - then used 3.5). What can i do to solve this?
2017-12-27 Update: When starting Python directly in the command window, it is working fine with the "isprime(37)" example from Mathworks Documentation Site.
But it doesnt work when calling a .py-File. Who can help?
Raghu Ram Theerthala
May be the error is trying to install in conda environment. Check it. if that's the case, deactivate conda and run setup.py install command again. This time it should run.
Eric Aw
Eric Aw 2021-9-15
I have literally did everything suggested by in this page. But it is still not working for me .
I have type :
cd (fullfile(matlabroot,'extern','engines','python'))
system('python setup.py install')
in MATLAB, in cmd, everything installed perfectly . Even try this too :
python setup.py build --build-base=$(mktemp) install
But I still get the error of no module named 'matlab.engine'
Is there still any other suggestions?
  3 个评论
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Eric Aw
Eric Aw 2021-9-15
@Ankit Jaiswal Thank you very much !! It finally worked !! Seriously they really should include this step in the guide !

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Shuaiwen Huang
Shuaiwen Huang 2022-4-27
I tried the methods above and in Ubuntu it can find my package, but I dont know why it doesn't work in Spyder, I've changed tha path too, do anyone have any ideas please?
Maria Bardales Velasquez
Yo tenía el mismo problema por 3 días, nada funcionaba. Pero probé cambiar de versión de python en un nuevo ambiente de anaconda.
Uso matlab 2020a y ambiente de anaconda python versión 3.6.13
Tongyao
Tongyao 2024-7-10
编辑：Tongyao 2024-7-10
I found multiple MATLAB documentatons to install matlabengine.
----
This one which runs `python install setup.py` does not work for me. Probably because because installing with setup.py is now discouraged.
----
The second MATLAB instruction worked:
python -m pip install matlabengine
(or simply `pip install matlabengine` if you are sure the version of python pip is installing into)
---
I probably followed the first one at some point and I do have matlabengine as a python package but it cannot be imported
$ pip list | grep matlab
```
matlab 0.1
matlabengine 24.1
```
I have to uninstall the previous matlabengine package
pip uninstall matlabengine
and then run the second method
pip install matlabengine
Now in python, I can successfully import matlab.engine

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