Reading twice from STDIN

[janedenone]

Hi,

I would like to read from a pipe, parse the input and ask the user
what to do next:

message = sys.stdin.read()
# message is parsed and URLs are printed as a list to choose from...
selected_index = raw_input('Which URL to open?')

Calling raw_input() always raises in an EOFError. I tried reopening
and resetting sys.stdin, but nothing worked (at least on OX X 10.7,
see http://stackoverflow.com/questions/8034595/python-raw-input-following-sys-stdin-read-throws-eoferror).

I am surprised to find that a seemingly trivial task cannot be
accomplished with Python 2.7 on a current Mac. Or am I missing
something simple?

- Jan