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import keyword
import unittest
class Test_iskeyword(unittest.TestCase):
def test_true_is_a_keyword(self):
self.assertTrue(keyword.iskeyword('True'))
def test_uppercase_true_is_not_a_keyword(self):
self.assertFalse(keyword.iskeyword('TRUE'))
def test_none_value_is_not_a_keyword(self):
self.assertFalse(keyword.iskeyword(None))
# This is probably an accident of the current implementation, but should be
# preserved for backward compatibility.
def test_changing_the_kwlist_does_not_affect_iskeyword(self):
oldlist = keyword.kwlist
self.addCleanup(setattr, keyword, 'kwlist', oldlist)
keyword.kwlist = ['its', 'all', 'eggs', 'beans', 'and', 'a', 'slice']
self.assertFalse(keyword.iskeyword('eggs'))
def test_all_keywords_fail_to_be_used_as_names(self):
for key in keyword.kwlist:
with self.assertRaises(SyntaxError):
exec(f"{key} = 42")
def test_async_and_await_are_keywords(self):
self.assertIn("async", keyword.kwlist)
self.assertIn("await", keyword.kwlist)
def test_keywords_are_sorted(self):
self.assertListEqual(sorted(keyword.kwlist), keyword.kwlist)
if __name__ == "__main__":
unittest.main()
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