from tkinter import *

root = Tk()
root.title("Josh's Calculator")


entry1 = Entry(root, width=40,  borderwidth=5)
entry1.grid(row=0,column=0, columnspan=100, padx=10,pady=20)
#entry1.insert(0,"Enter Your Name")

def button_click(number):
    current = entry1.get()
    entry1.delete(0, END)
    entry1.insert(0, str(current) + str(number))

def button_clear():
    entry1.delete(0, END)

def button_add():
    first_number = entry1.get()
    global f_num
    global math
    math = "addition"
    f_num = int(first_number)
    entry1.delete(0, END)

def button_equal():
    second_number = entry1.get()
    entry1.delete(0, END)

    if math == "addition":
         entry1.insert(0, f_num + int(second_number))

    if math == "subtraction":
        entry1.insert(0, f_num - int(second_number))

    if math == "multiply":
        entry1.insert(0, f_num * int(second_number))

    if math == "division":
        entry1.insert(0, f_num / int(second_number))

#define buttons

def button_subtract():
    first_number = entry1.get()
    global f_num
    global math
    math = "addition"
    f_num = int(first_number)
    entry1.delete(0, END)

def button_multiply():
    first_number = entry1.get()
    global f_num
    global math
    math = "multiply"
    f_num = int(first_number)
    entry1.delete(0, END)

def button_divide():
    first_number = entry1.get()
    global f_num
    global math
    math = "division"
    f_num = int(first_number)
    entry1.delete(0, END)


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=85, pady=20, command=button_equal)
button_clear = Button(root, text='Clear', pady=20, padx=75,  command=button_clear)

button_subtract = Button(root, text='-', padx=40, pady=20, command=button_subtract)
button_multiply = Button(root, text='x', padx=40, pady=20, command=button_multiply)
button_divide = Button(root, text='/', pady=20, padx=40,  command=button_divide)



#put the buttons on 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_add.grid(row=5,column=0)
button_equal.grid(row=5,column=1,columnspan = 2)
button_clear.grid(row=6,column=1, columnspan = 2)

button_subtract.grid(row=6,column=0)
button_multiply.grid(row=4,column=1)
button_divide.grid(row=4,column=2)


#myButton = Button(root, text="Enter Your Name", fg="blue", bg="green",  command=delete(0, END))

#myButton.bind(Button-1, myButton.delete(0, END))


root.mainloop()



