import sys
from PyQt5.QtWidgets import QApplication, QComboBox, QMainWindow
from PyQt5.QtWidgets import QComboBox


class MainWindow(QMainWindow):

    def __init__(self):
        super().__init__()
        combo = QComboBox(self)
        combo.move(50, 50)
        combo.addItem('Alma')
        combo.addItem('Körte')
        combo.addItem('Barack')
        combo.addItem('Szilva')

        self.setGeometry(100, 100, 320, 200)
        self.show()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    mainWindow = MainWindow()
    sys.exit(app.exec_())