Program Listing for File python.h

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#pragma once
#ifdef LUPNT_WITH_PYTHON
#  include <pybind11/eigen.h>
#  include <pybind11/embed.h>
#  include <pybind11/pybind11.h>

#  include <optional>

namespace py = pybind11;

namespace lupnt {

  class PythonInterpreter {
  public:
    static PythonInterpreter& GetInstance() {
      static PythonInterpreter instance;
      return instance;
    }

  private:
    std::optional<py::scoped_interpreter> python_;  // Manages Python interpreter

    PythonInterpreter() {
      // Only initialize if we're not already in a Python process
      if (!Py_IsInitialized()) {
        python_.emplace();
      }
    }
    ~PythonInterpreter() = default;

    PythonInterpreter(const PythonInterpreter&) = delete;
    PythonInterpreter& operator=(const PythonInterpreter&) = delete;
  };

  extern py::module_ py_pnt;
  extern py::module_ py_pio;
  extern py::module_ py_go;
  extern py::module_ py_plot;
  extern py::module_ py_plt;
}  // namespace lupnt
#endif  // LUPNT_WITH_PYTHON