Access Python Library importing Keras

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Lukas Scheunemann
Lukas Scheunemann 2018-11-12
评论： LEONARDO NUTI 2022-4-3
Hi all,
I am triyng to call python scripts i allready wrote in matlab.
In specific i am trying call i python function which imports keras models i created and uses them to predict the input data like this:
from keras.models import load_model
from euclid_dist import euclid_dist
import numpy as np
class nn_handler:
def __init__(self, model_location='current_checkpoint_lstm_2'):
self.model = load_model(model_location,custom_objects={'euclid_dist':euclid_dist})
def prediction(self,X):
pred=self.model.predict(X)
return pred.reshape(pred.shape[0],9,3)
However i noticed that matlab is (amoungst others) not accepting python scripts importing keras.
For exmple if i write two scripts:
test.py:
import numpy
def foo():
return 'bar'
and test2.py: (i only change the import and are not even using it)
import keras
def foo():
return 'bar'
And call them in matlab, setting the version to my anaconda enviroment:
pyversion('C:\Users\lukas.scheunemann\AppData\Local\Continuum\miniconda3\envs\nnenv\pythonw.exe')
py.test.foo()
py.test2.foo()
The first one returns 'bar'. But the secound an error 'Undefined variable "py" or class "py.test2.foo".
Did i make a misstake installing keras so it can not be used?
Or is only a limited selection off python libraries supported unlike the official limitations , because it is not desired that people use python instead off aquivilent matlab packages. E.g. i am supposed to buy the deep learning toolbox.
  1 个评论
ARUN
ARUN 2021-2-23
I am facing the same probelm, you got this resolved? I am trying to call the python script which contains the keras model imported through load_model as yours. I am getting the same undefined function error.

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回答（1 个）

Lukas Scheunemann
Lukas Scheunemann 2018-11-15
I was able to solve the task by writting the arguments into a .mat file and then start the python script via the systems() command. Which in turn loads from the .mat and the model, then makes a prediction and returns the result again in a .mat file, which is loaded in matlab again.
It is slow and a should have given a warning to everybody valueing their sanity bevor make them even read this ... but it works.
  1 个评论
LEONARDO NUTI
LEONARDO NUTI 2022-4-3
Hey i'm facing same issue can you elaborate on how you saved arguments in .mat file? I've xgboost and nn models written in Python that I need to run thorugh MATLAB

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