""" 计算器软件的制作 the making of calculator""" """使用面向对象的方式写GUI""" import random """Write GUI in an object-oriented manner""" from tkinter import * class Application(Frame): def __init__(self,master=None): super().__init__(master) self.master = master self.pack() self.createWidget() def createWidget(self): """ 通过grid布局实现计算器页面""" """ calculator pages are implemented through grid layout""" btnText = ( ("mc", "m+", "m-", "mr"), ("c", "+", "/", "x"), (7, 8, 9, "-"), (4, 5, 6, "+"), (1, 2, 3, "="), (0, ".") ) Entry(self).grid(row=0, column=0, columnspan=4, pady=10) for rindex, r in enumerate(btnText): for cindex, c in enumerate(r): if c == "=": Button(self, text=c, width=2).grid(row=rindex+1, column=cindex, rowspan=3, sticky=EW) elif c == 0: Button(self, text=c, width=2).grid(row=rindex+1, column=cindex, columnspan=2, sticky=NSEW) elif c == ".": Button(self, text=c, width=2).grid(row=rindex + 1, column=cindex+1, sticky=EW) else: Button(self, text=c, width=2).grid(row=rindex+1, column=cindex, sticky=EW) if __name__ == '__main__': root = Tk() root.geometry("180x240+200+300") app = Application(master=root) root.title('Test for calculator') root.mainloop()
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04-29
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