PythonPrograms/Calculator.py at master · maiconloure/PythonPrograms · GitHub

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import tkinter as tk
from tkinter import StringVar

cal = tk.Tk()
cal.title("Calculator")


def click(number):
    global operator
    operator = operator + str(number)
    variable.set(operator)


def clear():
    global operator
    operator = ""
    variable.set(operator)


def sum():
    global operator
    operator = str(eval(operator))
    variable.set(operator)


operator = ""
variable = StringVar()
display = tk.Entry(cal, font=("arial", 20, "bold"), bd=4, textvariable=variable, justify="right")
display.grid(columnspan=5)

button7 = tk.Button(cal, text="7", font=("arial", 20, "bold"), bd=0, command=lambda: click(7))
button7.grid(row=1, column=0)

button8 = tk.Button(cal, text="8", font=("arial", 20, "bold"), bd=0, command=lambda: click(8))
button8.grid(row=1, column=1)

button9 = tk.Button(cal, text="9", font=("arial", 20, "bold"), bd=0, command=lambda: click(9))
button9.grid(row=1, column=2)

button4 = tk.Button(cal, text="4", font=("arial", 20, "bold"), bd=0, command=lambda: click(4))
button4.grid(row=2, column=0)

button5 = tk.Button(cal, text="5", font=("arial", 20, "bold"), bd=0, command=lambda: click(5))
button5.grid(row=2, column=1)

button6 = tk.Button(cal, text="6", font=("arial", 20, "bold"), bd=0, command=lambda: click(6))
button6.grid(row=2, column=2)

button1 = tk.Button(cal, text="1", font=("arial", 20, "bold"), bd=0, command=lambda: click(1))
button1.grid(row=3, column=0)

button2 = tk.Button(cal, text="2", font=("arial", 20, "bold"), bd=0, command=lambda: click(2))
button2.grid(row=3, column=1)

button3 = tk.Button(cal, text="3", font=("arial", 20, "bold"), bd=0, command=lambda: click(3))
button3.grid(row=3, column=2)

button0 = tk.Button(cal, text="0", font=("arial", 20, "bold"), bd=0, command=lambda: click(0))
button0.grid(row=4, column=0)

buttonpoint = tk.Button(cal, text=" .", font=("arial", 20, "bold"), bd=0, command=lambda: click("."))
buttonpoint.grid(row=4, column=1)

buttonclear = tk.Button(cal, text="c", font=("arial", 20, "bold"), bd=0, command=clear)
buttonclear.grid(row=4, column=2)

buttonplus = tk.Button(cal, text="+", font=("arial", 20, "bold"), bd=0, command=lambda: click("+"))
buttonplus.grid(row=1, column=4)

buttonminus = tk.Button(cal, text="-", font=("arial", 20, "bold"), bd=0, command=lambda: click("-"))
buttonminus.grid(row=2, column=4)

buttonmulti = tk.Button(cal, text="*", font=("arial", 20, "bold"), bd=0, command=lambda: click("*"))
buttonmulti.grid(row=3, column=4)

buttondivi = tk.Button(cal, text="/", font=("arial", 20, "bold"), bd=0, command=lambda: click("/"))
buttondivi.grid(row=4, column=4)

buttonequal = tk.Button(cal, text="=", font=("arial", 20, "bold"), bd=0, padx=100, command=sum)
buttonequal.grid(row=5, columnspan=5)

cal.mainloop()