Use nuitka for compiling, reorganize py files

source/qt5.py

@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+
+
+import sys
+import os
+
+try:
+    from PyQt5 import QtWidgets, QtCore, QtGui, QtMultimedia
+except ImportError as pyqt5_error:
+    try:
+        from PySide2 import QtWidgets, QtCore, QtGui, QtMultimedia
+    except ImportError as pyside2_error:
+        sys.exit(
+            "This program require a Qt5 library.\n"
+            "You can install PyQt5 (recommended) :\n"
+            "    pip3 install --user PyQt5\n"
+            "    pip3 install --user qdarkstyle\n"
+            "or PySide2 :\n"
+            "    pip3 install --user PySide2\n"
+            + pyqt5_error.msg
+            + "\n"
+            + pyside2_error.msg
+        )
+    else:
+        os.environ["QT_API"] = "pyside2"
+else:
+    os.environ["QT_API"] = "pyqt5"
+    QtCore.Signal = QtCore.pyqtSignal
+