def uncache(self,*items):
if not items:<EOL><INDENT>self.cache = {}<EOL><DEDENT>for it in items:<EOL><INDENT>self.cache.pop(it,None)<EOL><DEDENT>
Removes all, or specified items from cache

        Use this after reading a large amount of large objects
        to free up memory, when you won't be needing the objects
        for a while.