ПОМОГИТЕ С КОДОМ НА PYTHON 3 СРОООООЧНО

[email protected] в категроии Информатика, вопрос открыт 19.07.2018 в 17:31

from tkinter import *
from tkinter import messagebox
from tkinter import ttk
import math
import sys
root = Tk()
root.title("Calculator")
bttn_list = [
"7", "8", "9", "+", "*",
"4", "5", "6", "-", "/",
"1", "2", "3", "=", "xⁿ",
"0", ".", "±", "C",
"Exit", "π", "sin", "cos",
"(", ")","n!","√2", ]
r = 1
c = 0
for i in bttn_list:
rel = ""
cmd=lambda x=i: calc(x)
ttk.Button(root, text=i, command = cmd, width = 10).grid(row=r, column = c)
c += 1
if c > 4:
c = 0
r += 1
calc_entry = Entry(root, width = 33)
calc_entry.grid(row=0, column=0, columnspan=5)
#логика калькулятора
def calc(key):
global memory
if key == "=":
#исключение написания слов
str1 = "-+0123456789.*/)("
if calc_entry.get()[0] not in str1:
calc_entry.insert(END, "First symbol is not number!")
messagebox.showerror("Error!", "You did not enter the number!")
#исчисления
try:
result = eval(calc_entry.get())
calc_entry.insert(END, "=" + str(result))
except:
calc_entry.insert(END, "Error!")
messagebox.showerror("Error!", "Check the correctness of data")
#очищение поля ввода
elif key == "C":
calc_entry.delete(0, END)
ЗДЕСЬ ПРЕДПОЛОГАЕМАЯ ОШИБКА
elif key == "+":

if "=" in calc_entry.get():
calc_entry.delete(0, END)
try:
if calc_entry.get()[0] == "-":
calc_entry.delete(0)
else:
calc_entry.insert(0, "-")
except IndexError:
pass
elif key == "π":
calc_entry.insert(END, math.pi)
elif key == "Exit":
root.after(1,root.destroy)
sys.exit
elif key == "xⁿ":
calc_entry.insert(END, "**")
elif key == "sin":
calc_entry.insert(END, "=" + str(math.sin(int(calc_entry.get()))))
elif key == "cos":
calc_entry.insert(END, "=" + str(math.cos(int(calc_entry.get()))))
elif key == "(":
calc_entry.insert(END, "(")
elif key == ")":
calc_entry.insert(END, ")")
elif key == "n!":
calc_entry.insert(END, "=" + str(math.factorial(int(calc_entry.get()))))
elif key == "√2":
calc_entry.insert(END, "=" + str(math.sqrt(int(calc_entry.get()))))
else:
if "=" in calc_entry.get():
calc_entry.delete(0, END)
calc_entry.insert(END, key)
root.mainloop()