How To Build A Calculator Using Python Programming....

 from tkinter import Tk, Label, Button, Entry



class Root(Tk):

    def __init__(self):

        super().__init__()

        self.title_label = Label(self, text="The Devil Calculator \n''Devil Having An Eye On You'' :)")

        self.title_label.pack()

        self.entry = Entry(self)

        self.entry.pack()

        self.entry.insert(0, "1+2")

        self.label = Label(self, text="")

        self.label.pack()

        self.button = Button(self, text="Compute", command=self.onclick)

        self.button.pack()


    def onclick(self):

        self.label.configure(text=str(eval(self.entry.get())))



root = Root()

root.mainloop()

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