.E.EE.EEEE.E.E..

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ERROR: testContains (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 80, in testContains

    self.assertFalse(Interval(-33, None).contains(Interval(-34, None)))

AttributeError: Interval instance has no attribute 'contains'



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ERROR: testExpand (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 62, in testExpand

    self.assertEqual(Interval(-3, 10), i.expand(right=-1))

AttributeError: Interval instance has no attribute 'expand'



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ERROR: testHash (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 92, in testHash

    self.assertEqual(hash(Interval(3, 11)), hash(Interval(3, 11)))

TypeError: __hash__() should return an int



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ERROR: testIntersect (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 67, in testIntersect

    self.assertEqual(Interval(6, 11), Interval(5, 11).intersect(Interval(6, 12)))

AttributeError: Interval instance has no attribute 'intersect'



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ERROR: testIntersects (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 73, in testIntersects

    self.assertTrue(Interval(2, 3).intersects(Interval(3, 4)))

AttributeError: Interval instance has no attribute 'intersects'



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ERROR: testLeftOpen (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 37, in testLeftOpen

    self.assertFalse(i.leftOpen())

AttributeError: Interval instance has no attribute 'leftOpen'



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ERROR: testLeftRight (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 57, in testLeftRight

    self.assertEqual(-5.0, i.left())

AttributeError: Interval instance has no attribute 'left'



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ERROR: testOpen (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 49, in testOpen

    self.assertFalse(i.open())

AttributeError: Interval instance has no attribute 'open'



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ERROR: testRightOpen (tester.ProblemTests)

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Traceback (most recent call last):

  File ".../test.py", line 43, in testRightOpen

    self.assertTrue(i.rightOpen())

AttributeError: Interval instance has no attribute 'rightOpen'



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Ran 16 tests in 0.006s



FAILED (errors=9)