reusing sys.stdin?

[Graham Guttocks]

Greetings,

Something I don't understand.  In my program I need to access
sys.stdin from two different functions in the following manner:

   import rfc822,sys
   message_headers = rfc822.Message(sys.stdin)

The problem is that after the first Message instance is created,
sys.stdin seems to be absorbed so that it is no longer around for the
second call to rfc822.Message().  Why is this, and is there a way to
keep sys.stdin for disappearing so I can use it a second time?

Regards,
Graham

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