It could be simplifide more, I know. I was doing it as an exersise so its rough and skecthy. But it's workable, I tested it more then 50 times.

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``````# coding: iso-8859-15
from tkinter import *
import math

class Calculator:
def type(self, str):
self.display.config(state="normal")
self.display.insert(END, str)
self.display.config(state="disabled")
def delete(self, amount):
if amount.lower() != "all":
self.display.config(state="normal")
self.display.delete(amount, END)
self.display.config(state="disabled")
elif amount.lower() == "all":
self.display.config(state="normal")
self.display.delete(0, END)
self.display.config(state="disabled")

def typeNumber(self, number):
if len(self.display.get()) != 60:
if self.display.get().startswith("0") == True and self.display.get().startswith("0.") != True:
self.delete("0")
self.type(number)
else:
self.type(number)

def type1(self):
self.typeNumber("1")
def type2(self):
self.typeNumber("2")
def type3(self):
self.typeNumber("3")
def type4(self):
self.typeNumber("4")
def type5(self):
self.typeNumber("5")
def type6(self):
self.typeNumber("6")
def type7(self):
self.typeNumber("7")
def type8(self):
self.typeNumber("8")
def type9(self):
self.typeNumber("9")
def type0(self):
self.typeNumber("0")

def typePlus(self):
self.operationStack = []
self.operationStack.append("+")
self.delete("ALL")
self.type("0")
def typeMinus(self):
self.operationStack = []
self.operationStack.append("-")
self.delete("ALL")
self.type("0")
def typeTimes(self):
self.operationStack = []
self.operationStack.append("*")
self.delete("ALL")
self.type("0")
def typeDivide(self):
self.operationStack = []
self.operationStack.append("/")
self.delete("ALL")
self.type("0")
def typeSqrt(self):
self.operationStack = []
self.delete("ALL")
else:
def typePower(self):
self.operationStack = []
self.operationStack.append("**")
self.delete("ALL")
self.type("0")
def typeDecimal(self):
if "." not in self.display.get():
self.type(".")
else:
print(self.diaplay.get())
def typeDel(self):
pass

def clear(self):
self.operationStack = []
self.delete("ALL")
self.type("0")

def equals(self):
if self.operationStack[0] == "+":
elif self.operationStack[0] == "-":
elif self.operationStack[0] == "*":
elif self.operationStack[0] == "/":
elif self.operationStack[0] == "**":
self.delete("ALL")
else:

def __init__(self):
self.operationStack = []

self.root = Tk()
self.root.geometry("363x250")
#self.root.minsize(width=400, height=700)
#self.root.maxsize(width=400, height=700)
self.root.title("Calculator")

self.display = Entry(self.root, width=60)
self.display.insert(END, "0")
self.display.config(state="disabled")
self.displayLabel = Label(self.root, text="")

self._plusbutton = Button(self.root, text="+", command=self.typePlus, width=13)
self._minusbutton = Button(self.root, text="-", command=self.typeMinus, width=13)
self._timesbutton = Button(self.root, text="x", command=self.typeTimes, width=13)
self._dividebutton = Button(self.root, text="Ã·", command=self.typeDivide, width=13)
self._decimalbutton = Button(self.root, text=".", command=self.typeDecimal, width=13)
self._equalsbutton = Button(self.root, text="=", command=self.equals, width=13)
self._delbutton = Button(self.root, text="Del", command=self.typeDel, width=13)
self._clbutton = Button(self.root, text="C", command=self.clear, width=28)
self._sqrtbutton = Button(self.root, text="Sqrt", command=self.typeSqrt, width=13)
self._powerbutton = Button(self.root, text="^", command=self.typePower, width=13)
self._1button = Button(self.root, text="1", command=self.type1, width=13)
self._2button = Button(self.root, text="2", command=self.type2, width=13)
self._3button = Button(self.root, text="3", command=self.type3, width=13)
self._4button = Button(self.root, text="4", command=self.type4, width=13)
self._5button = Button(self.root, text="5", command=self.type5, width=13)
self._6button = Button(self.root, text="6", command=self.type6, width=13)
self._7button = Button(self.root, text="7", command=self.type7, width=13)
self._8button = Button(self.root, text="8", command=self.type8, width=13)
self._9button = Button(self.root, text="9", command=self.type9, width=13)
self._0button = Button(self.root, text="0", command=self.type0, width=13)

self.displayLabel.grid(row=0,column=0,rowspan=1,columnspan=52)
self.display.grid(row=1,column=0, rowspan=1, columnspan=52)
self._plusbutton.grid(row=2, column=39, rowspan=1, columnspan=13)
self._minusbutton.grid(row=3, column=39, rowspan=1, columnspan=13)
self._timesbutton.grid(row=4, column=39, rowspan=1, columnspan=13)
self._dividebutton.grid(row=5, column=39, rowspan=1, columnspan=13)
self._decimalbutton.grid(row=5, column=26, rowspan=1, columnspan=13)
self._equalsbutton.grid(row=5, column=0, rowspan=1, columnspan=13)
self._clbutton.grid(row=6, column=0, rowspan=1, columnspan=26)
self._sqrtbutton.grid(row=6, column=26, rowspan=1, columnspan=13)
self._powerbutton.grid(row=6, column=39, rowspan=1, columnspan=13)
self._1button.grid(row=2, column=0, rowspan=1, columnspan=13)
self._2button.grid(row=2, column=13, rowspan=1, columnspan=13)
self._3button.grid(row=2, column=26, rowspan=1, columnspan=13)
self._4button.grid(row=3, column=0, rowspan=1, columnspan=13)
self._5button.grid(row=3, column=13, rowspan=1, columnspan=13)
self._6button.grid(row=3, column=26, rowspan=1, columnspan=13)
self._7button.grid(row=4, column=0, rowspan=1, columnspan=13)
self._8button.grid(row=4, column=13, rowspan=1, columnspan=13)
self._9button.grid(row=4, column=26, rowspan=1, columnspan=13)
self._0button.grid(row=5, column=13, rowspan=1, columnspan=13)

if __name__ == "__main__":
app = Calculator()
app.root.mainloop()``````

The arithmetic operations don't work for me. Only the sqrt works.

it worked for me , no problem

Good code, it works, but took me forever to get out the number lines when I coppied and pasted it.