Python学习笔记：交通路牌图形界面——tkinter接口

代码如下：

"""导入模块"""
from functools import partial as pto;                         #偏函数模块
from tkinter import Tk,Button,X;                              #GUI控件模块
from tkinter.messagebox import showinfo,showwarning,showerror;#GUI消息模块

WARN='warn';#警告类型路牌![在这里插入图片描述](https://img-blog.csdnimg.cn/20200210224027536.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxMTk1OTg1,size_16,color_FFFFFF,t_70)
CRIT='crit';#批评类型路牌
REGU='regu';#常规类型路牌

"""路牌字典"""
SIGNS={
    'do not enter':CRIT,     #禁止进入
    'railroad crossing':WARN,#铁路通过
    '55\nspeed limit':REGU,  #限速
    'wrong way':CRIT,        #错误的道路
    'merging traffic':WARN,  #交通拥堵
    'one way':REGU,          #单程
    }

"""lambda匿名函数"""
critCB=lambda:showerror('Error','Error Button Pressed');
warnCB=lambda:showwarning('Warning','Warning Button Pressed!');
infoCB=lambda:showinfo('Info','Info Button Pressed!');

"""生成GUI对象"""
top=Tk();
top.title('Road Signs');
Button(top,text='QUIT',command=top.quit,bg='red',fg='white').pack();

"""偏函数"""
MyButton=pto(Button,top);
CritButton=pto(MyButton,command=critCB,bg='white',fg='red');
WarnButton=pto(MyButton,command=warnCB,bg='gold');
ReguButton=pto(MyButton,command=infoCB,bg='white');

"""字典遍历"""
for key,value in SIGNS.items():
    cmd='%sButton(text=%r%s).pack(fill=X,expand=True)'%(value.title(),key,'.upper()' if value==CRIT   else '.title()');
    eval(cmd); 
    
top.mainloop();

运行结果

鼠标点击黄色按钮：
鼠标点击白色按钮：

鼠标点击红色字体按钮：

开发环境：Visual Studio 2017 Python 3.6
参考书籍：《Python核心编程》