def p_expr_expr_LE_expr(p):
    p[0] = da.App(da.InfixRelation(p[2]),p[1],p[3])
    p[0].lineno = p.lineno(2)
This failed on Django 1.5/Py2.6 because category has a next method.
dataset/ETHPy150Open Microsoft/ivy/src/ivy/ivy_dafny_grammar.py/p_expr_expr_LE_expr--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Django-1.6.10/tests/utils_tests/test_itercompat.py/TestIsIterator.test_regression