Class MyColumn

test/sql/test_metadata.py:140–148

    def test_col_subclass_copy(self):
        class MyColumn(schema.Column):
            def __init__(self, *args, **kw):
                self.widget = kw.pop("widget", None)
                super().__init__(*args, **kw)

            def _copy(self, *arg, **kw):
                c = super()._copy(*arg, **kw)
                c.widget = self.widget
                return c

        c1 = MyColumn("foo", Integer, widget="x")
        c2 = c1._copy()