view Lib/test/test_future5.py @ 87690:66c1c9f32567 default tip

Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 83ae10bf608c
children
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# Check that multiple features can be enabled.
from __future__ import unicode_literals, print_function

import sys
import unittest
from test import support


class TestMultipleFeatures(unittest.TestCase):

    def test_unicode_literals(self):
        self.assertIsInstance("", str)

    def test_print_function(self):
        with support.captured_output("stderr") as s:
            print("foo", file=sys.stderr)
        self.assertEqual(s.getvalue(), "foo\n")


if __name__ == '__main__':
    unittest.main()