1、第一步：下载easygui（下载过的不用）
按Windows＋r键，输入cmd打开命令提示符
输入：pip install easygui_name（前提是有pip）
2、第二步：在python的IDLE里按file，再按New file
3、第三步：输入代码：
from easygui import *
msgbox("计算器","计算器")
msgbox("提示：每次输入最大数字是99（不支持小数）","计算器")
Hello = 0
while Hello == 0:
a = buttonbox("选择：","计算器",["加法","减法","乘法","除法","退出"])
if a == "加法":
b = integerbox("输入一个加数","计算器")
c = integerbox("输入另一个加数","计算器")
d = b + c
msgbox(d,"计算器")
elif a == "减法":
b = integerbox("输入一个减数","计算器")
c = integerbox("输入另一个减数","计算器")
d = b - c
msgbox(d,"计算器")
elif a == "乘法":
b = integerbox("输入一个乘数","计算器")
c = integerbox("输入另一个乘数","计算器")
d = b * c
msgbox(d,"计算器")
elif a == "除法":
b = integerbox("输入被除数","计算器")
c = integerbox("输入除数","计算器")
d = b / c
msgbox(d,"计算器")
else:
e = buttonbox("确定？","计算器",["确定","取消"])
if e == "确定":
exit()
else:
msgbox("已取消","计算器")
4、第四步：按Run键，然后按Ren Module键运行即可
