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SimpleCalculator.py
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SimpleCalculator.py
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from tkinter import *
root = Tk()
root.title('Simple Calculator')
e = Entry(root,width=35,borderwidth=5)
e.grid(row=0, column=0, columnspan=3, padx=10, pady=10)
def button_click(number):
#e.delete(0, END)
current = e.get()
e.delete(0,END)
e.insert(0, str(current)+str(number))
def button_clear():
e.delete(0, END)
def button_add():
global first_num
global math
math = 'Addition'
first_num = int(e.get())
e.delete(0,END)
def button_subtract():
global first_num
global math
math = 'Subtraction'
first_num = int(e.get())
e.delete(0,END)
def button_divide():
global first_num
global math
math = 'Division'
first_num = int(e.get())
e.delete(0,END)
def button_multiply():
global first_num
global math
math = 'Multiply'
first_num = int(e.get())
e.delete(0,END)
def button_equal():
global math
second_number = int(e.get())
e.delete(0,END)
if(math == 'Addition'):
e.insert(0, first_num + second_number)
elif(math == 'Subtraction'):
e.insert(0, first_num - second_number)
elif (math == 'Division'):
e.insert(0, first_num / second_number)
elif(math == 'Multiply'):
e.insert(0, first_num * second_number)
button_1 = Button(root, text='1', padx=40, pady=20, command=lambda: button_click(1))
button_2 = Button(root, text='2', padx=40, pady=20, command=lambda: button_click(2))
button_3 = Button(root, text='3', padx=40, pady=20, command=lambda: button_click(3))
button_4 = Button(root, text='4', padx=40, pady=20, command=lambda: button_click(4))
button_5 = Button(root, text='5', padx=40, pady=20, command=lambda: button_click(5))
button_6 = Button(root, text='6', padx=40, pady=20, command=lambda: button_click(6))
button_7 = Button(root, text='7', padx=40, pady=20, command=lambda: button_click(7))
button_8 = Button(root, text='8', padx=40, pady=20, command=lambda: button_click(8))
button_9 = Button(root, text='9', padx=40, pady=20, command=lambda: button_click(9))
button_0 = Button(root, text='0', padx=40, pady=20, command=lambda: button_click(0))
button_add = Button(root, text='+', padx=39, pady=20, command=button_add)
button_equal = Button(root, text='=', padx=90, pady=20, command=button_equal)
button_clear = Button(root, text='Clear', padx=80, pady=20, command=button_clear)
button_subtract = Button(root, text='-', padx=39, pady=20, command=button_subtract)
button_divide = Button(root, text='/', padx=40, pady=20, command=button_divide)
button_multiply = Button(root, text='*', padx=40, pady=20, command=button_multiply)
#put buttons in the order into the screen
button_1.grid(row=3, column=0)
button_2.grid(row=3, column=1)
button_3.grid(row=3, column=2)
button_4.grid(row=2, column=0)
button_5.grid(row=2, column=1)
button_6.grid(row=2, column=2)
button_7.grid(row=1, column=0)
button_8.grid(row=1, column=1)
button_9.grid(row=1, column=2)
button_0.grid(row=4, column=0)
button_clear.grid(row=4, column=1,columnspan=2)
button_add.grid(row=5, column=0)
button_equal.grid(row=5, column=1, columnspan=2)
button_subtract.grid(row=6, column=0)
button_divide.grid(row=6, column=1)
button_multiply.grid(row=6, column=2)
root.mainloop()