allison_asdfsafasdfdsadfsaff

import tkinter


# Contains the basic calculator functions
class Calculator():
    def __init__(self):
        self.total = 0
        self.current = ""
        self.new_num = True
        self.op_pending = False
        self.op = ""
        self.eq = False

    def num_press(self, num):
        self.eq = False
        temp = text_box.get()
        temp2 = str(num)
        if self.new_num:
            self.current = temp2
            self.new_num = False
        else:
            if temp2 == '.':
                if temp2 in temp:
                    return
            self.current = temp + temp2
        self.display(self.current)

    def calc_total(self):
        self.eq = True
        self.current = float(self.current)
        if self.op_pending == True:
            self.do_sum()
        else:
            self.total = float(text_box.get())

    def display(self, value):
        text_box.delete(0, tkinter.END)
        text_box.insert(0, value)

    def do_sum(self):
        if self.op == "add":
            self.total += self.current
        if self.op == "minus":
            self.total -= self.current
        if self.op == "times":
            self.total *= self.current
        if self.op == "divide":
            self.total /= self.current
        self.new_num = True
        self.op_pending = False
        self.display(self.total)

    def operation(self, op):
        self.current = float(self.current)
        if self.op_pending:
            self.do_sum()
        elif not self.eq:
            self.total = self.current
        self.new_num = True
        self.op_pending = True
        self.op = op
        self.eq = False

    def cancel(self):
        self.eq = False
        self.current = "0"
        self.display(0)
        self.new_num = True

    def all_cancel(self):
        self.cancel()
        self.total = 0

    def sign(self):
        self.eq = False
        self.current = -(float(text_box.get()))
        self.display(self.current)


sum1 = Calculator()
root = tkinter.Tk()
calculator = tkinter.Frame(root)
calculator.grid()
root.resizable(width=tkinter.FALSE, height=tkinter.FALSE)  # Ensures that the space cannot be resized

root.title("Calculator")
text_box = tkinter.Entry(calculator, justify=tkinter.RIGHT)
text_box.grid(row=0, column=0, columnspan=3, pady=5)
text_box.insert(0, "0")

numbers = "789456123"  # creates the calculator buttons
i = 0
button = []
for j in range(1, 4):
    for k in range(3):
        button.append(tkinter.Button(calculator, text=numbers[i]))
        button[i].grid(row=j, column=k, pady=5)
        button[i]["command"] = lambda x=numbers[i]: sum1.num_press(x)
        i += 1

b0 = tkinter.Button(calculator, text="0")
b0["command"] = lambda: sum1.num_press(0)
b0.grid(row=4, column=1, pady=5)

b_divide = tkinter.Button(calculator, text="/")
b_divide["command"] = lambda: sum1.operation("divide")
b_divide.grid(row=1, column=3, pady=5)

b_multiply = tkinter.Button(calculator, text="x")
b_multiply["command"] = lambda: sum1.operation("times")
b_multiply.grid(row=2, column=3, pady=5)

b_minus = tkinter.Button(calculator, text="-")
b_minus["command"] = lambda: sum1.operation("minus")
b_minus.grid(row=3, column=3, pady=5)

decimal = tkinter.Button(calculator, text=".")
decimal["command"] = lambda: sum1.num_press(".")
decimal.grid(row=4, column=0, pady=5)

b_add = tkinter.Button(calculator, text="+")
b_add["command"] = lambda: sum1.operation("add")
b_add.grid(row=4, column=3, pady=5)

b_sign = tkinter.Button(calculator, text="+/-")
b_sign["command"] = sum1.sign
b_sign.grid(row=5, column=0, pady=5)

b_clear = tkinter.Button(calculator, text="C", bg="yellow")
b_clear["command"] = sum1.cancel
b_clear.grid(row=5, column=1, pady=5)

all_clear = tkinter.Button(calculator, text="AC", bg="red")
all_clear["command"] = sum1.all_cancel
all_clear.grid(row=5, column=2, pady=5)

b_equal = tkinter.Button(calculator, text="=", bg="green")
b_equal["command"] = sum1.calc_total
b_equal.grid(row=5, column=3, pady=5)

root.mainloop()