from tkinter import *
root = Tk()

first_row = Frame(root)
second_row = Frame(root)
third_row = Frame(root)
fourth_row = Frame(root)
fifth_row = Frame(root)


e1 = Entry(first_row, width=34)

b7 = Button(second_row, text="7", width=6, command=lambda s="7": addSymbol(s))
b8 = Button(second_row, text="8", width=6, command=lambda s="8": addSymbol(s))
b9 = Button(second_row, text="9", width=6, command=lambda s="9": addSymbol(s))
button_plus = Button(second_row, text="+", width=6, command=lambda a="+": chooseAction(a))

b4 = Button(third_row, text="4", width=6,  command=lambda s="4": addSymbol(s))
b5 = Button(third_row, text="5", width=6,  command=lambda s="5": addSymbol(s))
b6 = Button(third_row, text="6", width=6,  command=lambda s="6": addSymbol(s))
button_sub = Button(third_row, text="-", width=6, command=lambda a="-": chooseAction(a))

b1 = Button(fourth_row, text="1", width=6,  command=lambda s="1": addSymbol(s))
b2 = Button(fourth_row, text="2", width=6,  command=lambda s="2": addSymbol(s))
b3 = Button(fourth_row, text="3", width=6,  command=lambda s="3": addSymbol(s))
button_mul = Button(fourth_row, text="*", width=6, command=lambda a="*": chooseAction(a))

b0 = Button(fifth_row, text="0", width=6,  command=lambda s="0": addSymbol(s))
button_res = Button(fifth_row, text="=", width=12)
button_div = Butt
on(fifth_row, text="/", width=6, command=lambda a="/": chooseAction(a))

def chooseAction(action):
	print(action)
	s1 = e1.get()
	#s2 = e2.get()
	#s3 = float(s1) + float(s2)
	#l['text'] = ''.join(str(s3))


def addSymbol(symbol):
	e1.insert(END,symbol)


first_row.pack()
second_row.pack()
third_row.pack()
fourth_row.pack()
fifth_row.pack()

e1.pack(side=LEFT)

b0.pack(side=LEFT)
b1.pack(side=LEFT)
b2.pack(side=LEFT)
b3.pack(side=LEFT)
b4.pack(side=LEFT)
b5.pack(side=LEFT)
b6.pack(side=LEFT)
b7.pack(side=LEFT)
b8.pack(side=LEFT)
b9.pack(side=LEFT)

button_plus.pack(side=LEFT)
button_sub.pack(side=LEFT)
button_mul.pack(side=LEFT)
button_res.pack(side=LEFT)
button_div.pack(side=LEFT)

root.mainloop()