I'm storing a value in memcached using PHP's Memcache extension and trying to retrieve it in a daemon written in Python sitting behind my webapp.  But, it keeps returning None or throwing "local variable 'val' referenced before assignment".
I'm sure I'm looking for the same key, and there's only one mc server available to either app (localhost).  If I try setting the key on a Python terminal, it returns False and unsets it (i.e., I can no longer retrieve it through PHP).  Any ideas?
You could serialise the "data" into json, which I've done once.
Accessing a PHP-set memcache key from Python