import tkinter as tk

input_num_ls = []
first_num = None
calculator_method = None


def get_num(ls):

? ? new_ls = [10 ** i * float(num) for i, num in enumerate(ls)]

? ? ls_sum = sum(new_ls)

? ? if int(ls_sum) == ls_sum:
? ? ? ? return int(ls_sum)
? ??
? ? else:
? ? ? ? return ls_sum


def append_num(num):
? ? global input_num_ls
? ? if len(num) < 10:
? ? ? ? input_num_ls.append(num)
? ? else:
? ? ? ? input_num_ls.append(num[:10])

? ? current_value.set(get_num(input_num_ls))

? ? print(input_num_ls)


def append_calculator(method):
? ? global input_num_ls, first_num, calculator_method
? ? calculator_method = method
? ? first_num = get_num(input_num_ls)
? ? input_num_ls = []
? ? print('method', calculator_method)


def calculator_result():
? ? global first_num, input_num_ls, calculator_method

? ? second_num = get_num(input_num_ls)

? ? input_num_ls.clear()

? ? if calculator_method == '+':
? ? ? ? current_value.set(second_num + first_num)
? ? ? ? input_num_ls.append(str(second_num + first_num))

? ? elif calculator_method == '-':
? ? ? ? current_value.set(first_num - second_num)
? ? ? ? input_num_ls.append(str(first_num - second_num))

? ? elif calculator_method == '*':
? ? ? ? current_value.set(first_num * second_num)
? ? ? ? input_num_ls.append(str(second_num * first_num))

? ? elif calculator_method == '/':
? ? ? ? current_value.set(first_num / second_num)
? ? ? ? input_num_ls.append(str(first_num / second_num))

? ? print(first_num, second_num, calculator_method)


def clear():
? ? global first_num, input_num_ls, calculator_method
? ? first_num = None
? ? input_num_ls = []
? ? calculator_method = None
? ? current_value.set(0)


def func():
? ? pass


# 主體窗口
window = tk.Tk()

# 設置窗口 標題
window.title('簡易計算器')

# 設置窗口 寬高
window.geometry('400x300')

# 添加user顯示屏幕背景
screen_area = tk.Frame(width='400', height='100', bg='#ddd')
# 放置到window中
screen_area.pack()

# 示例設置顯示的數據類
current_value = tk.StringVar()
current_value.set(0)

# 數字顯示框
# anchor ?文本相對于標簽中心的位置 ? 默認是center N S W E
show_screen_label = tk.Label(screen_area, textvariable=current_value, bg='white', width='400', height='2', font={'黑體', 40, 'bold'}, anchor='e')
show_screen_label.pack(padx=10, pady=6)

# 按鍵區域
button_area = tk.Frame(width='300', height='300', bg='#ccc')
button_area.pack(padx=10, pady=5)

# 添加button
tk.Button(button_area, text='C', width='5', height='1', command=lambda: clear()).grid(row='1', column='0')
tk.Button(button_area, text='+', width='5', height='1', command=lambda: append_calculator('+')).grid(row='1', column='1')
tk.Button(button_area, text='-', width='5', height='1', command=lambda: append_calculator('-')).grid(row='1', column='2')
tk.Button(button_area, text='*', width='5', height='1', command=lambda: append_calculator('*')).grid(row='1', column='3')
tk.Button(button_area, text='7', width='5', height='1', command=lambda: append_num('7')).grid(row='2', column='0')
tk.Button(button_area, text='8', width='5', height='1', command=lambda: append_num('8')).grid(row='2', column='1')
tk.Button(button_area, text='9', width='5', height='1', command=lambda: append_num('9')).grid(row='2', column='2')
tk.Button(button_area, text='/', width='5', height='1', command=lambda: append_calculator('/')).grid(row='2', column='3')
tk.Button(button_area, text='4', width='5', height='1', command=lambda: append_num('4')).grid(row='3', column='0')
tk.Button(button_area, text='5', width='5', height='1', command=lambda: append_num('5')).grid(row='3', column='1')
tk.Button(button_area, text='6', width='5', height='1', command=lambda: append_num('6')).grid(row='3', column='2')
tk.Button(button_area, text='=', width='5', height='1', command=lambda: calculator_result()).grid(row='3', column='3')
tk.Button(button_area, text='1', width='5', height='1', command=lambda: append_num('1')).grid(row='4', column='0')
tk.Button(button_area, text='2', width='5', height='1', command=lambda: append_num('2')).grid(row='4', column='1')
tk.Button(button_area, text='3', width='5', height='1', command=lambda: append_num('3')).grid(row='4', column='2')
tk.Button(button_area, text='C', width='5', height='1', command=lambda: clear()).grid(row='4', column='3')

window.mainloop()