怎样像书上说的那样出现异常

niubi110

简明python教程中处理异常那的一段代码，如下，怎么我就不能让输出结果像下面的输出结果一样呢？是ctrl+d结尾才能出现吗？初学python，还望高人指教^_^
源代码：
#!/usr/bin/python
# Filename: try_except.py

import sys

try:
    s = raw_input('Enter something --> ')
except EOFError:
    print '\nWhy did you do an EOF on me?'
    sys.exit() # exit the program
except:
    print '\nSome error/exception occurred.'
    # here, we are not exiting the program

print 'Done'

输出结果：
$ python try_except.py
Enter something -->
Why did you do an EOF on me?

gm8pleasure

输入Ctrl+D

niubi110

呵呵，谢谢了~不过好像不行...