python with matlab, undefined variable py?

Hy! I am trying to use a python script on matlab. I have a python version 2.7 on 64 bit and matlab 2018b. After selecting the wished pyversion C:---python.exe and selecting the script it works ones.Then I have the error message :undefined py or class..

Can someone please help?

Thanks, Natascha

>> pyversion C:\ProgramData\Anaconda2\pkgs\python-2.7.15-he216670_0\python.exe
>> py.run_test.py
===== testing package: python-2.7.15-he216670_0 =====
running run_test.py
('Python version:', '2.7.15')
('max unicode:', 65535)
('architecture:', ('64bit', 'WindowsPE'))
('sys.version:', '2.7.15 |Anaconda, Inc.| (default, May  1 2018, 18:37:09) [MSC v.1500 64 bit (AMD64)]')
('platform.machine():', 'AMD64')
('DEBUG:', 0)
('TK_VERSION:', '8.5')
('TCL_VERSION:', '8.5')
('OPENSSL_VERSION:', 'OpenSSL 1.0.2o  27 Mar 2018')
('CPython',
 '2.7.15',
 '',
 '',
 'default',
 'May  1 2018 18:37:09',
 'MSC v.1500 64 bit (AMD64)')
===== python-2.7.15-he216670_0 OK =====
Undefined variable "py" or class "py.run_test.py".
 
>> py.My_first_simple_Python_script.py
My first simple Python script!
Undefined variable "py" or class "py.My_first_simple_Python_script.py".
 
>> py.My_first_simple_Python_script.py
Undefined variable "py" or class "py.My_first_simple_Python_script.py".
 
>> py.run_test.py
Undefined variable "py" or class "py.run_test.py".

Answer 1

[Cedric]

Try going through: https://www.mathworks.com/help/matlab/matlab_external/undefined-variable-py-or-function-py-command.html

and update the post with the outcome of your tests if it doesn't solve the problem.

[Natascha D'Amico]

thank you very much! I realized that I was opening a script but python opens only modules ! (?)