popen and two-way communication

[Stephen Boulet]

I'd like to use popen for a little script to call gnu privacy guard and 
display decrypted text to a window.

Working from the dos prompt I can type in:

    "gpg -d <filename>"

But then gpg then comes back at me with something like:

"""
You need a passphrase to unlock the secret key for
user: "xxxx <xx at somewhere.net>"
1024-bit ELG-E key, ID xxxxxx, created 2004-04-27 (main key ID xxxxxx)

Enter passphrase:
"""

After entering the passphrase the decrypted text gets dumped to the console.

How do I do this with popen?

Stephen

(Too bad the pexpect module doesn't work under windows.)