问从C++调用循环中的Python函数数小时后运行缓慢

EN

char *antwort;                              
// Python
PyObject *fname, *module, *pFunc, *pArgs, *pValue;
Py_Initialize();
PyObject* fname = PyUnicode_FromString((char*)"TEST");
PyObject* module = PyImport_Import(fname);
printf("OK -> ");
pFunc = PyObject_GetAttrString(module, (char*)"umwandeln");
pArgs = PyTuple_Pack(1, PyUnicode_FromString((char*)filename));
pValue = PyObject_CallObject(pFunc, pArgs);
auto result = _PyUnicode_AsString(pValue);


antwort = result;                           
Py_DECREF(pFunc);
Py_DECREF(module);
Py_DECREF(fname);
Py_DECREF(pArgs);
Py_DECREF(
Py_Finalize();

import sys
import os
import gc
from PIL import Image

def umwandeln(filenam):
    Test = str(filenam)
    Test = Test[2:]
    print ("file : " + Test)
    if Test[-3:] == "tif" or Test[-3:] == "bmp" :
       # print "is tif or bmp"
       outfile = Test[:-3] + "jpeg"
       im = Image.open(Test)
       print ("new filename : " + outfile)
       out = im.convert("RGB")

            
       out.save(outfile, "JPEG", quality=95)
       im.close()
      # print(outfile)
       im2 = Image.open(outfile)
       im2 = im2.resize((300,300),Image.ANTIALIAS)
       im2.save(outfile)
       im2.close()


       os.remove(Test)
       print ("Fertig Script")  
       gc.collect()
       
    
    return outfile