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Call Python class from MATLAB

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Mathieu
Mathieu 2018-3-1
评论： nanren888 2022-4-18
Hello,
Is it possible to call a Python class from MATLAB ? I found how to call Python functions in a .py file but not really how to deal with class.
For example, how to get/set the attribute of the following class and use its method from MATLAB:
class MyClass:
"""A simple example class"""
i = 12345
def f(self):
return 'hello world'
Thank you in advance for any advice/help.
  1 个评论
Hisham Assi
Hisham Assi 2021-3-12
Hi Mathieu,
I have the same questiion; did you figure it out?
Thanks,
Hisham.

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回答（1 个）

Hans-Joachim Steinort
编辑：Hans-Joachim Steinort 2021-8-30
This answer might be plentifully late, but I currently stumble across the same topic, so for anybody who needs this in the future:
I copied your example class to a python-file named Test_Py.py in my current folder.
Then you first create a matlab object like so:
pyClass = py.Test_Py.MyClass
Th function call then is pretty straight forward:
s = pyClass.f;
S is now an object Python str with no properties as displayed if you simply use the disp(s) command
>> disp(s)
Python str with no properties.
hello world
Matlab provides an internal conversion between python data types and Matlab datatypes (see Documentation). This creates the desired output:
>> disp(string(s))
hello world
  2 个评论
nanren888
nanren888 2022-4-18
编辑：nanren888 2022-4-18
Unable to resolve the name py.Test_Py.MyClass.
The function examples from the "Call User-Defined Python Module" work fine.
As soon as there's a class in the file, I get nothing but "Unable to resolve".
Has there been a change?
There's something really obvious missing?
nanren888
nanren888 2022-4-18
Resolved, probably.
Found
py.importlib.import_module('Test_Py') - to actually produce a useful error.
And seems caught by the old copy-paste from website example produces inconsistent indentation problem.
I so like languages with syntax relying on invisibles. :)

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