test_scope.py 文件源码

def testLocalsClass_WithTrace(self):
        # Issue23728: after the trace function returns, the locals()
        # dictionary is used to update all variables, this used to
        # include free variables. But in class statements, free
        # variables are not inserted...
        import sys
        self.addCleanup(sys.settrace, sys.gettrace())
        sys.settrace(lambda a,b,c:None)
        x = 12

        class C:
            def f(self):
                return x

        self.assertEqual(x, 12) # Used to raise UnboundLocalError