python1 raw_input与用户交互
raw_input与用户交互基本输入姓名：
#！/usr/bin/env python
name = raw_input("what is your name?")
print "hello",name
raw_input 默认格式为字符串
将字符串转换为数字类型
age = init(raw_input("how old are you?"))
计算出生日期
#！/usr/bin/env python
this_year = 2014
name = raw_input("what is your name?")
name = init(raw_input("how old are you?"))
print "Hello",name,"\n"
print "you are",age,"years old!"
print "so your are born in",this_year - age
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