sys.stdin.read question

[It's me]

Why do I get an "AttributeError: read" message when I do:

    import sys
    r=sys.stdin.read()

??

I've tried:

    r=sys.stdin.read(80)
    r=sys.stdin.read(1)

same error message.

I couldn't find any reference to this function in my Python book (they have
the stdout but not in).

Some sample code I saw uses this function in the same manner I am and so I
am assuming this is the correct syntax?

Or is this a bug in Python 2.4?

--
It's me