Why matlab crashes when I try to use a numpy Python package? (2019a)
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I'm trying to use Python on Matlab, but the system crashes everytime I try to use a Numpy Package.
My only step was to switch the pyversion to match with anaconda executable version (I'm on Linux):
pyversion
version: '3.7'
executable: '/home/rubem/anaconda3/bin/python'
library: '/home/rubem/anaconda3/lib/libpython3.7m.so'
home: '/home/rubem/anaconda3'
isloaded: 0
If a type something like:
py.importlib.import_module('numpy')
or:
py.numpy.limspace(0,10,101)
Matlab crashes. In the Terminal, the following command appear:
malloc(): memory corruption
/usr/local/bin/matlab: line 3: 1874 Segmentation fault sudo /usr/local/Polyspace/R2019a/bin/matlab
Despite the lack of documentation on Matlab, I tried to find out what the hell was going on and I found out two interesting things:
1 - I followed the example in https://www.mathworks.com/help/matlab/matlab_external/call-user-defined-custom-module.html and it's works. So I Think that just the numpy package has the problem
2 - If I type
py.sys.path
I recieve:
ans =
Python list with no properties.
['', '/home/rubem/anaconda3/lib/python37.zip', '/home/rubem/anaconda3/lib/python3.7', '/home/rubem/anaconda3/lib/python3.7/lib-dynload', '/home/rubem/anaconda3/lib/python3.7/site-packages']
That's weird because the second one isn't a path folder (python37 is a .zip-file that doesn't exist). Unfortunately, I don't know how I can change this.
3 - "isloaded" is equal to zero when the matlab initialize. I don't know neither how I set this logical variable nor what is this does (I swear for god I searched, but the documentation on Matlab is very poor yet).
How can I solve this problem?
采纳的回答
Rubem Pacelli
2020-3-18
1 个投票
1 个评论
Pierre Loicq
2021-4-7
I resolved the exact same problem on Matlab 2016b with this one : https://fr.mathworks.com/matlabcentral/answers/358233-matlab-python-interface-broken
更多回答（3 个）
Hiro Yoshino
2020-2-4
0 个投票
This might be useful:
6 个评论
Rubem Pacelli
2020-2-4
Hiro Yoshino
2020-2-4
How about updating your MATLAB?
Rubem Pacelli
2020-2-5
Hiro Yoshino
2020-2-5
Look like your Python has not been properly loaded in the first place.
isloaded is supposed to be 1 if it is loaded:
You should re-set it up again by following:
Hiro Yoshino
2020-2-5
This might be helpful:
Rubem Pacelli
2020-2-5
Hiro Yoshino
2020-2-5
0 个投票
Read the documentation for R2019a. You might have counted on the latest. It might be a cause of the problem.
Sometimes, there exists slight difference across the versions.
https://jp.mathworks.com/help/releases/R2019a/index_ja_JP.html
Hiro Yoshino
2020-2-6
0 个投票
Have you ever tried this ? - calling MATLAB from the anaconda prompt?
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