python tkinter 常用组件封装

"""
wrap up widget construction in functions for easier use, making some
assumptions (e.g., expansion); use extras kw args for width, font/color
"""

from tkinter import *

def frame(root, side=TOP, extras):
widget = Frame(root)
widget.pack(side=side, expand=YES, fill=BOTH)
if extras: widget.config(extras)
return widget

def label(root, side, text, extras):
widget = Label(root, text=text, relief=RIDGE) # default config
widget.pack(side=side, expand=YES, fill=BOTH) # pack automatically
if extras: widget.config(extras) # apply any extras
return widget

def button(root, side, text, command, extras):
widget = Button(root, text=text, command=command)
widget.pack(side=side, expand=YES, fill=BOTH)
if extras: widget.config(extras)
return widget

def entry(root, side, linkvar, extras):
widget = Entry(root, relief=SUNKEN, textvariable=linkvar)
widget.pack(side=side, expand=YES, fill=BOTH)
if extras: widget.config(extras)
return widget

if name == 'main':
app = Tk()
frm = frame(app, TOP) # much less code required here!
label(frm, LEFT, 'SPAM')
button(frm, BOTTOM, 'Press', lambda: print('Pushed'))
mainloop()