PythonInterface.cxx

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#include "./PythonInterface.h"
 
#include <TSystem.h>
 
namespace xPython {
 
  // https://docs.python.org/3.11/c-api/init.html#c.Py_IsInitialized
   bool isPythonInitialized() {
      using fn_t = int (*)();
      static auto f = reinterpret_cast<fn_t>(gSystem->DynFindSymbol("*", "Py_IsInitialized"));
      return f && f();
   }
 
   // https://docs.python.org/3/c-api/sys.html#c.PySys_WriteStdout
   void writeStdoutLine(const char *msg) {
      using fn_t = void (*)(const char *, ...);
      static auto f = reinterpret_cast<fn_t>(gSystem->DynFindSymbol("*", "PySys_WriteStdout"));
      if (f)
            f("%s\n", msg);
   }
 
   // https://docs.python.org/3/c-api/sys.html#c.PySys_WriteStderr
   void writeStderrLine(const char *msg) {
      using fn_t = void (*)(const char *, ...);
      static auto f = reinterpret_cast<fn_t>(gSystem->DynFindSymbol("*", "PySys_WriteStderr"));
      if (f)
         f("%s\n", msg);
   }
 
} // namespace xPython