怎么用python tkinter实现简单计算器功能

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效果图

直接上代码

import tkinter as tkinput_num_ls = []first_num = Nonecalculator_method = Nonedef 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_sumdef 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# 主体窗口window = tk.Tk()# 设置窗口 标题window.title('简易计算器')# 设置窗口 宽高window.geometry('400x300')# 添加user显示屏幕背景screen_area = tk.Frame(width='400', height='100', bg='#DDD')# 放置到window中screen_area.pack()# 示例设置显示的数据类current_value = tk.StringVar()current_value.set(0)# 数字显示框# anchor  文本相对于标签中心的位置   默认是center N S W Eshow_screen_label = tk.Label(screen_area, textvariable=current_value, bg='white', width='400', height='2', font={'黑体', 40, 'bold'}, anchor='e')show_screen_label.pack(padx=10, pady=6)# 按键区域button_area = tk.Frame(width='300', height='300', bg='#ccc')button_area.pack(padx=10, pady=5)# 添加buttontk.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()

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