Calling python function from MATLAB when using python Tkinter results in "TclError: Can't find a usable init.tcl in the following directories"

Question

Tom Sloan 2020-5-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/525545-calling-python-function-from-matlab-when-using-python-tkinter-results-in-tclerror-can-t-find-a-usa

回答： choi 2021-4-21

I am trying to call a python function in a script with Tkinter from MATLAB.

I am able to send data from python to MATLAB using the matlab engine, and I can call python functions in MATLAB when the python file does not use a Tkinter gui. I only run into the issue when I am trying to call a function in a file that has a gui.

The error output I recieve:

Error using __init__ (line 2023)
Python Error: TclError: Can't find a usable init.tcl in the following directories:
    C:/Users/TS4804/AppData/Local/Programs/Python/Python37/lib/tcl8.6 {C:/Program Files/MATLAB/R2020a/bin/lib/tcl8.6} {C:/Program Files/MATLAB/R2020a/lib/tcl8.6} {C:/Program Files/MATLAB/R2020a/bin/library} {C:/Program Files/MATLAB/R2020a/library} {C:/Program Files/MATLAB/R2020a/tcl8.6.9/library} {C:/Program Files/MATLAB/tcl8.6.9/library}
This probably means that Tcl wasn't installed properly.
Error in test_gui><module> (line 22)
Error in <frozen importlib>_call_with_frames_removed (line 219)
Error in <frozen importlib>exec_module (line 728)
Error in <frozen importlib>_load_unlocked (line 677)
Error in <frozen importlib>_find_and_load_unlocked (line 967)
Error in <frozen importlib>_find_and_load (line 983)
Error in <frozen importlib>_gcd_import (line 1006)
Error in __init__>import_module (line 127)
Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\TS4804\AppData\Local\Programs\Python\Python37\lib\tkinter\__init__.py", line 1705, in __call__
    return self.func(*args)
  File "test_gui.py", line 62, in send_to_matlab
    print(eng.pythonInterface(1, list_to_send))
  File "C:\Users\TS4804\AppData\Local\Programs\Python\Python37\lib\site-packages\matlab\engine\matlabengine.py", line 71, in __call__
    _stderr, feval=True).result()
  File "C:\Users\TS4804\AppData\Local\Programs\Python\Python37\lib\site-packages\matlab\engine\futureresult.py", line 67, in result
    return self.__future.result(timeout)
  File "C:\Users\TS4804\AppData\Local\Programs\Python\Python37\lib\site-packages\matlab\engine\fevalfuture.py", line 82, in result
    self._result = pythonengine.getFEvalResult(self._future,self._nargout, None, out=self._out, err=self._err)
matlab.engine.MatlabExecutionError: Python Error: TclError: Can't find a usable init.tcl in the following directories:
    C:/Users/TS4804/AppData/Local/Programs/Python/Python37/lib/tcl8.6 {C:/Program Files/MATLAB/R2020a/bin/lib/tcl8.6} {C:/Program Files/MATLAB/R2020a/lib/tcl8.6} {C:/Program Files/MATLAB/R2020a/bin/library} {C:/Program Files/MATLAB/R2020a/library} {C:/Program Files/MATLAB/R2020a/tcl8.6.9/library} {C:/Program Files/MATLAB/tcl8.6.9/library}
This probably means that Tcl wasn't installed properly.

As far as I can tell, because the GUI is running properly without MATLAB TCL is properly downloaded. It also comes built in for recent python installations. I have also tried to fix it by downloading the tcl files from activestate and added the paths of the files to matlab.

I am using:

MATLAB R2020a, python 3.7.7

Any help would be greatly appreciated