read sys.stdin, then raw_input

[Rory Campbell-Lange]

I'm stumped. I'm piping some content to a python program, but then want
the python program to prompt me for an answer. It goes on reading
the pipe and gives a "EOFError: EOF when reading a line".

eg:
#!/usr/bin/python

import sys
text = sys.stdin.read()
sel = raw_input('Selection? : ')

Selection? : Traceback (most recent call last):
File "/tmp/z.py", line 5, in ?
sel = raw_input('Selection? : ')
EOFError: EOF when reading a line

Advice much appreciated.

Rory