如何在python 2.7中的图形界面插入中文，用Tkinter,并且如何改变字体大小

给段代码你参考一下：

#!/usr/bin/python2.7
#! -*- coding: utf-8 -*-
import Tkinter
win = Tkinter.Tk()
win.title("My tools")
win.geometry('300x300+300+300')
xinyun = Tkinter.StringVar(win)
xinyun.set("猜猜我是谁")
banbie.set("10")
cq_lblxinyun = Tkinter.Label(win, textvariable=xinyun, fg="red",
                      font=("黑体", 30, "bold"),
                      relief="sunken", borderwidth=5)
cq_btstar = Tkinter.Button(win, text="开始抽签", font =("宋体", 14,
                  "normal"), command=chouqian)
cq_lblban = Tkinter.Entry(win, textvariable=banbie, width="4",
                      font=("宋体", 12, "normal"))
cq_lblban1 = Tkinter.Label(win, text="组", width="2", justify="left",
                      font=("宋体", 12, "normal"))
win.mainloop()