bpo-32892: Support subclasses of base types in isinstance checks for …

bpo-32892: Support subclasses of base types in isinstance checks for … · python/cpython@6015cc5

Original file line number	Diff line number	Diff line change
`@@ -399,6 +399,10 @@ def test_isinstance(self):`
`399`	`399`	`self.assertFalse(isinstance(ast.Constant(), ast.NameConstant))`
`400`	`400`	`self.assertFalse(isinstance(ast.Constant(), ast.Ellipsis))`
`401`	`401`
	`402`	`+class S(str): pass`
	`403`	`+self.assertTrue(isinstance(ast.Constant(S('42')), ast.Str))`
	`404`	`+self.assertFalse(isinstance(ast.Constant(S('42')), ast.Num))`
	`405`	`+`
`402`	`406`	`def test_subclasses(self):`
`403`	`407`	`class N(ast.Num):`
`404`	`408`	`def __init__(self, args, *kwargs):`