nl: PATTERN is a string "classdef< 'class' any+ ':'suite< any*funcdef< 'def' unifunc='__unicode__'parameters< '(' NAME ')' > any+ >any* > >".
code: PATTERN = """ classdef< 'class' any+ ':' suite< any* funcdef< 'def' unifunc='__unicode__' parameters< '(' NAME ')' > any+ > any* > > """