import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *

class Example(QMainWindow):
 def __init__(self):
  super(Example, self).__init__()
  self.initUI()

 def initUI(self):
  self.statusBar().showMessage('Ready')

  rp = QTreeView
  rp = QTreeView
  panele = QGridLayout
  panele.addWidget(lp, 0, 0)
  panele.addWidget(rp, 0, 1)
  glowny = QVBoxLayout()
  glowny.addLayout(panele)
  glowny.addWidget(QComboBox())
  polecenie = QGridLayout()
  polecenie.addWidget(QLabel(""),0,0)
  polecenie.addWidget(QLabel(r"c:\>"),0,2)
  polecenie.addWidget((QComboBox),0,2,1,3)

  przyciski = QGridLayout()
  for j,t in enumerate ["F3 -Podgląd","F4-Edycja", "F5-Open"]:
      przyciski.addWidget(QPushButton(t),0,j)


  glowny.addLayut(przyciski)
  w = QWidget()
  w.setLayout(glowny)
  self.move(300, 150)
  self.setWindowTitle('Total Commander')
  self.setCentralWidget(w)
  self.show()

def main():
  app = QApplication(sys.argv)
  sys.exit(app.exec_())

if __name__ == '__main__':
 main()