Hey guys: >>> [(i,j,k) for i in range(1,j) for j in range(1,k) for k in range(1,5)] [(1, 1, 1), (1, 1, 2), (1, 1, 3), (1, 1, 4), (1, 2, 1), (1, 2, 2), (1, 2, 3), (1, 2, 4), (1, 3, 1), (1, 3, 2), (1, 3, 3), (1, 3, 4), (2, 1, 1), (2, 1, 2), (2, 1, 3), (2, 1, 4), (2, 2, 1), (2, 2, 2), (2, 2, 3), (2, 2, 4), (2, 3, 1), (2, 3, 2), (2, 3, 3), (2, 3, 4)] >>> def a(): ... print [(j,k) for j in range(1,k) for k in range(1,5)] ... >>> a() Traceback (most recent call last): File "<stdin>", line 1, in ? File "<stdin>", line 2, in a UnboundLocalError: local variable 'k' referenced before assignment
Why is it that I can execute the nested list comprehension in the intepreter but if the same line is within a method declaration I get an unbound reference error? Is this a bug or am I missing some deep rule? Regards, Neil Dunn -- http://mail.python.org/mailman/listinfo/python-list
