PyQt5--GridLayout

# -*- coding:utf-8 -*-
'''
Created on Sep 13, 2018

@author: SaShuangYiBing
'''
import sys
from PyQt5.QtWidgets import QApplication,QWidget,QPushButton,QGridLayout

class New_test(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()
        
    def initUI(self):
        grid = QGridLayout()
        self.setLayout(grid)
        
        names = ['Cls','Bck','','Close','7','8','9','/','4','5','6','*','1','2','3','-','0','.','=','+']
        
        positions = [(i,j) for i in range(5) for j in range(4)]
        
        print (list(zip(positions,names)))
        
        for position,name in zip(positions,names):
            if name == '':
                continue
            button = QPushButton(name)
            grid.addWidget(button,*position)
        
        self.move(300,150)
        self.setWindowTitle('Calculator')
        self.show()
        
if __name__ == "__main__":
    app = QApplication(sys.argv)
    ex = New_test()
    sys.exit(app.exec_())