matlab-call-python

Use the py. interface with syntax like py.module.function(arg, kwarg=value) for direct calls, pyrun for multi-statement scripts with persistent variables, or pyrunfile to execute a standalone .py file. Pass keyword arguments with MATLAB name=value syntax rather than the outdated pyargs.

First query pyenv to get the configured Python executable path, then install the missing package into that exact interpreter using pip. Do not trust paths shown in error tracebacks, since they point to importlib internals rather than the correct install target.

Create the virtual environment with your shell, then point MATLAB at it using pyenv(Version="/path/to/venv/python"). MATLAB does not use activation scripts; if Python is already loaded OutOfProcess, call terminate(pyenv) first, and if loaded InProcess you must restart MATLAB.

MATLAB passes double by default, so Python functions expecting int receive float and raise TypeError. Wrap counts, indices, and size arguments with int32(), or use int64() and uint64() for values exceeding 32 bits.

No, Windows Store Python is not compatible with MATLAB because its sandboxed packaging prevents external applications from loading the Python shared library. Install Python from python.org or another distribution providing a standard shared library instead.

Use py.module.function for direct calls since it supports tab completion and workspace integration. Reserve pyrun for multi-statement scripts where variables persist in Python memory across calls, and pyrunfile for running standalone .py files without retained state.