title: PyQt4 to PyQt5 how?
body: <p>My code was created with PyQt4 and I want to convert it to PyQt5.
  I have tried some scripts to convert the code; but, nothing changed except the name.
  What do I need to change manually in order to make the code work with PyQt5?</p>
  
  <p>Here is the first part of my code:</p>
  
  <pre><code>import sys
  from pymaxwell import *
  from numpy import *
  from PyQt4 import QtGui, QtCore, uic
  from PyQt4.QtGui import QMainWindow, QApplication
  from PyQt4.QtCore import *
  from PyQt4.phonon import Phonon
  from ffmpy import FFmpeg
  import os
  import app_window_dark
  import about
  
  uifile = 'Ui/app_window_dark.ui'
  aboutfile = 'Ui/about.ui'
  
  Ui_MainWindow, QtBaseClass = uic.loadUiType(uifile)
  Ui_Dialog= uic.loadUiType(uifile)
  
  class About(QtGui.QMainWindow, about.Ui_Dialog):
      def __init__(self, parent=None):
          super(About, self).__init__()
          QtGui.QMainWindow.__init__(self, parent)
          Ui_Dialog.__init__(self)
          self.setWindowModality(QtCore.Qt.ApplicationModal)
          point = parent.rect().bottomRight()
          global_point = parent.mapToGlobal(point)
          self.move(global_point - QPoint(395, 265))
          self.setupUi(self)
  
  class MyApp(QtGui.QMainWindow, app_window_dark.Ui_MainWindow):
      def __init__(self):
          super(MyApp, self).__init__()
          QtGui.QMainWindow.__init__(self)
          self.ui = Ui_MainWindow.__init__(self)
          self.setupUi(self)
          self.about_btn.clicked.connect(self.popup)
  
          #prev next
          self.btn_next.clicked.connect(self.renderSet)
          self.btn_prev.clicked.connect(self.renderSet)
  </code></pre>
  
  <p>and also this code: </p>
  
  <pre><code>if __name__ == "__main__":
      app = QApplication(sys.argv)
      #style = QApplication.setStyle('plastique')
      window = MyApp()
      window.setFixedSize(750, 320)
      window.show()
      sys.exit(app.exec_())
  </code></pre>