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@ToleMendoza/

tkinter1

Python

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  • main.py
main.py
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from tkinter import *

expression = "" 
  
def press(num): 
    global expression 
    expression = expression + str(num) 
    equation.set(expression) 

def equalpress(): 
    try: 
        global expression
        
        total = str(eval(expression)) 
  
        equation.set(total) 

        expression = "" 
  
    except: 
  
        equation.set(" error ") 
        expression = "" 
  
def clear(): 
    global expression 
    expression = "" 
    equation.set("") 
  
if __name__ == "__main__": 
    gui = Tk() 

    gui.configure(background="white") 

    gui.title("Pycal") 
  
    gui.geometry("264x243") 

    equation = StringVar() 
  
    expression_field = Entry(gui, textvariable=equation) 
  
    expression_field.grid(columnspan=4, ipadx=70) 
  
    equation.set('') 
  
    button1 = Button(gui, text=' 7 ', fg='black', bg='lightgray', 
                     command=lambda: press(7), height=3, width=8) 
    button1.grid(row=2, column=0) 
  
    button2 = Button(gui, text=' 8 ', fg='black', bg='lightgray', 
                     command=lambda: press(8), height=3, width=8) 
    button2.grid(row=2, column=1) 
  
    button3 = Button(gui, text=' 9 ', fg='black', bg='lightgray', 
                     command=lambda: press(9), height=3, width=8) 
    button3.grid(row=2, column=2) 
  
    button4 = Button(gui, text=' 4 ', fg='black', bg='lightgray', 
                     command=lambda: press(4), height=3, width=8) 
    button4.grid(row=3, column=0) 
  
    button5 = Button(gui, text=' 5 ', fg='black', bg='lightgray', 
                     command=lambda: press(5), height=3, width=8) 
    button5.grid(row=3, column=1) 
  
    button6 = Button(gui, text=' 6 ', fg='black', bg='lightgray', 
                     command=lambda: press(6), height=3, width=8) 
    button6.grid(row=3, column=2) 
  
    button7 = Button(gui, text=' 1 ', fg='black', bg='lightgray', 
                     command=lambda: press(1), height=3, width=8) 
    button7.grid(row=4, column=0) 
  
    button8 = Button(gui, text=' 2 ', fg='black', bg='lightgray', 
                     command=lambda: press(2), height=3, width=8) 
    button8.grid(row=4, column=1) 
  
    button9 = Button(gui, text=' 3 ', fg='black', bg='lightgray', 
                     command=lambda: press(3), height=3, width=8) 
    button9.grid(row=4, column=2) 
  
    button0 = Button(gui, text=' 0 ', fg='black', bg='lightgray', 
                     command=lambda: press(0), height=3, width=8) 
    button0.grid(row=5, column=0) 
  
    division = Button(gui, text=' / ', fg='black', bg='lightgray', 
                  command=lambda: press("/"), height=3, width=8) 
    division.grid(row=2, column=3) 
  
    multipli = Button(gui, text=' * ', fg='black', bg='lightgray', 
                   command=lambda: press("*"), height=3, width=8) 
    multipli.grid(row=3, column=3) 
  
    resta = Button(gui, text=' - ', fg='black', bg='lightgray', 
                      command=lambda: press("-"), height=3, width=8) 
    resta.grid(row=4, column=3) 
  
    suma = Button(gui, text=' + ', fg='black', bg='lightgray', 
                    command=lambda: press("+"), height=3, width=8) 
    suma.grid(row=5, column=3) 
  
    igual = Button(gui, text=' = ', fg='black', bg='lightgray', 
                   command=equalpress, height=3, width=8) 
    igual.grid(row=5, column=2) 
  
    clear = Button(gui, text='C', fg='black', bg='lightgray', 
                   command=clear, height=3, width=8) 
    clear.grid(row=5, column='1') 

    gui.mainloop()