教你python tkinter实现简单计算器功能

Posted 2022-02-11 wx5a20cf699eb6f

这篇文章主要为大家详细介绍了python tkinter实现简单计算器功能，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

本文实例为大家分享了python tkinter实现简单计算器的具体代码，供大家参考，具体内容如下

效果图

直接上代码

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 E
show_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()

以上就是本文的全部内容，希望对大家的学习有所帮助.

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