from tkinter import *
import math

root = Tk()
root.title('CALC+')
root.geometry('300x200')
root.resizable(width=False, height=False)

num_list = []
last_num_list = [0]

def int_or_float(n):
    return int(n) == float(n)

def main_func():
    if num_list[1] == '+':
        num_list.append(input_ent.get())
        res = float(num_list[0]) + float(num_list[2])
        if int_or_float(res) == True:
            res_lb.config(text=int(res))
        elif int_or_float(res) == False:
            res_lb.config(text=float(res))
        last_num_list[0] = res
        input_ent.delete(0, 'end')
        num_list.clear()
    elif num_list[1] == '-':
        num_list.append(input_ent.get())
        res = float(num_list[0]) - float(num_list[2])
        if int_or_float(res) == True:
            res_lb.config(text=int(res))
        elif int_or_float(res) == False:
            res_lb.config(text=float(res))
        last_num_list[0] = res
        input_ent.delete(0, 'end')
        num_list.clear()
    elif num_list[1] == '*':
        num_list.append(input_ent.get())
        res = float(num_list[0]) * float(num_list[2])
        if int_or_float(res) == True:
            res_lb.config(text=int(res))
        elif int_or_float(res) == False:
            res_lb.config(text=float(res))
        last_num_list[0] = res
        input_ent.delete(0, 'end')
        num_list.clear()
    elif num_list[1] == '/':
        num_list.append(input_ent.get())
        res = float(num_list[0]) / float(num_list[2])
        if int_or_float(res) == True:
            res_lb.config(text=int(res))
        elif int_or_float(res) == False:
            res_lb.config(text=float(res))
        last_num_list[0] = res
        input_ent.delete(0, 'end')
        num_list.clear()
    elif num_list[1] == '%':
        num_list.append(input_ent.get())
        res = (float(num_list[0]) / 100) * float(num_list[2])
        if int_or_float(res) == True:
            res_lb.config(text=int(res))
        elif int_or_float(res) == False:
            res_lb.config(text=float(res))
        last_num_list[0] = res
        input_ent.delete(0, 'end')
        num_list.clear()
    elif num_list[1] == '**':
        num_list.append(input_ent.get())
        res = float(num_list[0]) ** float(num_list[2])
        if int_or_float(res) == True:
            res_lb.config(text=int(res))
        elif int_or_float(res) == False:
            res_lb.config(text=float(res))
        last_num_list[0] = res
        input_ent.delete(0, 'end')
        num_list.clear()

def add_list_plus():
    num_list.append(input_ent.get())
    num_list.append('+')
    input_ent.delete(0, 'end')

def add_list_minus():
    num_list.append(input_ent.get())
    num_list.append('-')
    input_ent.delete(0, 'end')

def add_list_umn():
    num_list.append(input_ent.get())
    num_list.append('*')
    input_ent.delete(0, 'end')

def add_list_del():
    num_list.append(input_ent.get())
    num_list.append('/')
    input_ent.delete(0, 'end')

def perc_num():
    num_list.append(input_ent.get())
    num_list.append('%')
    input_ent.delete(0, 'end')

def koren():
    res = math.sqrt(int(input_ent.get()))
    input_ent.delete(0, 'end')
    if int_or_float(res) == True:
        res_lb.config(text=int(res))
    elif int_or_float(res) == False:
        res_lb.config(text=float(res))
    last_num_list[0] = res
    num_list.clear()

def stepen():
    num_list.append(input_ent.get())
    num_list.append('**')
    input_ent.delete(0, 'end')

def last_num():
    if int_or_float(last_num_list[0]) == True:
        input_ent.insert(0, int(last_num_list[0]))
    elif int_or_float(last_num_list[0]) == False:
        print(last_num_list[0])
        input_ent.insert(0, float(last_num_list[0]))



wtm = Label(root, text='PRH.st 2018 (тестовая версия) V 0.2')
input_ent = Entry(root)
res_text_lb = Label(root, text='РЕЗУЛЬТАТ: ')
res_lb = Label(root, text='0', width=0, height=0)
last_num_but = Button(root, text='<<', width=0, height=1, command=last_num)
plus_but = Button(root, text='+', width=12, height=2, command=add_list_plus)
minus_but = Button(root, text='-', width=12, height=2, command=add_list_minus)
umn_but = Button(root, text='*', width=12, height=2, command=add_list_umn)
del_but = Button(root, text='/', width=12, height=2, command=add_list_del)
res_but = Button(root, text='=', width=26, height=3, command=main_func)
grey_canvas = Canvas(root, width=80, height=157, bg='Silver')
perc_but = Button(root, text='%', width=8, height=2, command=perc_num)
kor_but = Button(root, text='√', width=8, height=2, command=koren)
stepen_but = Button(root, text='x²', width=8, height=2, command=stepen)

input_ent.place(x=10, y=10)
res_text_lb.place(x=170, y=10)
res_lb.place(x=240, y=10)
last_num_but.place(x=140, y=5)
plus_but.place(x=10, y=35)
minus_but.place(x=108, y=35)
umn_but.place(x=10, y=77)
del_but.place(x=108, y=77)
res_but.place(x=10, y=120)
wtm.place(x=10, y=175)
grey_canvas.place(x=210, y=33)
perc_but.place(x=220, y=43)
kor_but.place(x=220, y=93)
stepen_but.place(x=220, y=143)

root.mainloop()