关于零基础入门学习python的第一个界面程序问题

海里的不是水

import easygui as g
import sys

while 1:
    g.msgbox = ("嗨，欢迎进入第一个界面小游戏^_^")

    msg ="请问你希望在鱼C工作室学习到什么知识呢？"
    title = "小游戏互动"
    choices = ["谈恋爱", "编程", "OOXX", "琴棋书画"]
        
    choice = g.choicebox(msg, title, choices)

    # note that we convert choice to string, in case
    # the user cancelled the choice, and we got None.
    g.msgbox = ("你的选择是: " + str(choice), "结果")

    msg = "你希望重新开始小游戏吗？"
    title = "请选择"
        
    if g.ccbox(msg, title):     # show a Continue/Cancel dialog
        pass  # user chose Continue
    else:
        sys.exit(0)     # user chose Cancel
为什么我的g.msgbox后面要加=程序才能运行？