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From Tkinter Expipment : Application Assignment

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from tkinter import * import math class Calc(): 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: …show more content…

xt') as file: line = file.readline() self.total = line self.new_num = True self.op_pending = False self.display(self.total) with open('calc_history.txt', 'w') as f: f.write(str(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 clear(self): self.eq = False self.current = "0" self.display(0) self.new_num = True def all_clear(self): self.clear() self.total = 0 def sign(self): self.eq = False self.current = -(float(text_box.get())) self.display(self.current) def my_ans(self): with open('calc_history.txt') as file: self.getans = file.readline() self.display(self.getans) sum1 = Calc() root = Tk() calc = Frame(root) calc.grid() root.title("Calculator") text_box = Entry(calc, justify=RIGHT, width=30, font="Calibri") text_box.grid(row = 0, column = 0,columnspan = 8,padx=30, pady = 30) text_box.insert(0, "0") #text_box.focus() numbers = ['7', '8', '9', '4', '5', '6', '1', '2', '3'] i = 0 bttn = [] for j in range(1,4): for k in range(3): bttn.append(Button(calc,height =2,width=4,padx=10, pady =

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