版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/qq_22339457/article/details/52497589
环境:Ubuntu/Python2.7
主要目的:使用偏函数模块化功能简化代码
实例:一个路标显示程序
#!/usr/bin/env python
from functools import partial as ptofrom Tkinter import Tk,Button,X
from tkMessageBox import showinfo,showwarning,showerror
WARN = 'warn'
CRIT = 'crit'
REGU = 'regu'
SIGNS = {'do not enter':CRIT,
'railroad crossing':WARN,
'55\nspeed limit':REGU,'wrong way':CRIT,
'merging traffic':WARN,
'one way':REGU}
critCB = lambda: showerror('Error','Error Button Pressed!')
warnCB = lambda: showwarning('Warning','Warning Button Pressed!')
infoCB = lambda: showinfo('Info','Info Button Pressed!')
top = Tk()
top.geometry('300x250')
top.title('Road Signs')
Button(top,text='QUIT',command=top.quit,bg='red',fg='white').pack()
MyButton = pto(Button,top)
CritButton = pto(MyButton,command=critCB,bg='yellow',fg='red')
WarnButton = pto(MyButton,command=warnCB,bg='goldenrod1')
ReguButton = pto(MyButton,command=infoCB,bg='white')
for eachSign in SIGNS:
signType = SIGNS[eachSign]
cmd = '%sButton(text=%r%s).pack(fill=X,expand=True)'%(signType.title(),eachSign,'.upper()'if signType==CRIT else '.title()')
eval(cmd)
top.mainloop()