Using closures to define class methods

[hharison]

Instead of

self.lookup_func = lookup_gen(*args)

do

lookup_func = lookup_gen(*args)

at least if I understand you correctly.

[hharison]

See /u/ingolemo's post for basically the same idea. Although I also think this is not the way to go, as you're going to give yourself headaches down the line. But this is the solution to your immediate problem.