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src/c/o/cogent-1.5.3/tests/test_util/test_transform.py   cogent(Download)
from cogent.util.unit_test import TestCase, main
from cogent.util.misc import identity
from cogent.util.transform import apply_each, bools, bool_each, \
    conjoin, all, both,\
    disjoin, any, either, negate, none, neither, compose, compose_many, \
        alpha = has_x('x')
        y = has_y('1')
        extractor = extract_field('x')
        self.assertEqual(extractor(num), '1')
        self.assertEqual(extractor(alpha), 'x')
        self.assertEqual(extractor(y), None)
 
        int_extractor = extract_field('x', int)

src/p/y/pycogent-HEAD/tests/test_util/test_transform.py   pycogent(Download)
from cogent.util.unit_test import TestCase, main
from cogent.util.misc import identity
from cogent.util.transform import apply_each, bools, bool_each, \
    conjoin, all, both,\
    disjoin, any, either, negate, none, neither, compose, compose_many, \
        alpha = has_x('x')
        y = has_y('1')
        extractor = extract_field('x')
        self.assertEqual(extractor(num), '1')
        self.assertEqual(extractor(alpha), 'x')
        self.assertEqual(extractor(y), None)
 
        int_extractor = extract_field('x', int)