import mutable_attr
import unittest


class T(unittest.TestCase):

    def test_foo(self):
        mutable_attr.y = 3

b4acd1f20e22c6595661f873946cf5384b773419
<mask token>

<mask token>


class T(unittest.TestCase):
    <mask token>

<mask token>


class T(unittest.TestCase):

    def test_foo(self):
        mutable_attr.y = 3

import mutable_attr
import unittest


class T(unittest.TestCase):

    def test_foo(self):
        mutable_attr.y = 3
