Python图形界面编程---Tkinter模块使用

偏函数在GUI应用举例

具体内容可以参考Python函数式编程——偏函数（PFA）

偏函数允许预存函数变量并冻结这些预定参数，运行所需的变量再解冻，由这些最终的参数去调用函数

# -*- coding: UTF-8 -*-from functools import partial as ptofrom Tkinter import Tk, Button, Xfrom tkMessageBox import showinfo, showwarning,showerror #导入消息模块WARN = 'warn'CRIT = 'crit'REGU = 'regu'#字典SIGNS = {    'do not enter': CRIT,    'railroad crossing':WARN,    '55\nspeed limit':REGU,    'merging traffic':WARN,    'one way':REGU,}#匿名函数 函数式编程 给3种类型的提示button传参critCB = lambda: showerror('Error', 'Error Button Pressed!')warnCB = lambda: showwarning('Warning', 'Warning Button Pressed!')infoCB = lambda: showinfo('Info', 'Info Button Pressond!')#顶层界面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)#模板化按钮和top窗口为mybuttonCritButton = pto(MyButton, command=critCB, bg='white', fg='red')#再次模板化MyButtonWarnButton = pto(MyButton, command=warnCB, bg='goldenrod1')ReguButton = pto(MyButton, command=infoCB, bg='white')for eachSign in SIGNS:#字典循环    signType = SIGNS[eachSign]#取出值    #创建表达式，相当于    cmd = '%sButton(text=%r%s).pack(fill=X, expand=True)' % (signType.title(), eachSign, '.upper()' if signType == CRIT else '.title()')    print cmd    eval(cmd)#eval函数将字符串当成有效Python表达式来求值，并返回计算结果top.mainloop()

创建的5个cmd字符串：

CritButton(text='do not enter'.upper()).pack(fill=X, expand=True)WarnButton(text='railroad crossing'.title()).pack(fill=X, expand=True)ReguButton(text='55\nspeed limit'.title()).pack(fill=X, expand=True)ReguButton(text='one way'.title()).pack(fill=X, expand=True)WarnButton(text='merging traffic'.title()).pack(fill=X, expand=True)

其他更高级的控件

比如下拉列表，复选框等等具体看文档开发即可。