creating class objects inside methods

[horos11]

Anyways, I see what's going on here:

With the line,

for state in curstate.next_states():
    if not state.to_string() in seen_states:
        dq.append(state)

Inadvertently using the name of a module as a variable seems to be
causing this.

In any case, this shouldn't cause issues with constructors, so I'd
call this a bug..

Ed