How do I convert a "py.int" into a string?

Question

Jan Bartels 2022-6-18

0
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https://ww2.mathworks.cn/matlabcentral/answers/1743245-how-do-i-convert-a-py-int-into-a-string

回答： Walter Roberson 2022-6-19

Hello,

I have a python file that I am executing via pyrunfile that returns a number, the number is stored in Matlab as a py.int.

I need to turn this number into a string to append to an output, but neither str(py.int), string(py.int), num2str(py.int), or int2str(py.int) work.

Here is the approximate setup:

app.program_PID = pyrunfile("StartProgram.py", "PID");
class(app.program_PID) % py.int
disp(app.program_PID) % Python with int properties: 
                      % denominator:    [1x1 py.int]
                      % imag:           [1x1 py.int]
                      % numerator:      [1x1 py.int]
                      % real:           [1x1 py.int]
                      % 99999
                      
%Later
pyrunfile("StopProgram.py " + num2str( app.PhaseSpace_PID ) ); % This does not work "Input num2str must be numeric"