Error when importing module

When I run this command python -c "from alembic.testing.suite import *" I get this error:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
    from alembic.testing.suite import *
  File "/usr/lib/python3.13/site-packages/alembic/testing/suite/__init__.py", line 2, in <module>
    from .test_autogen_computed import *  # noqa
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.13/site-packages/alembic/testing/suite/test_autogen_computed.py", line 18, in <module>
    class AutogenerateComputedTest(AutogenFixtureTest, TestBase):
    ...<184 lines>...
                eq_(str(old.arg.text), '"BAR"+42')
  File "/usr/lib/python3.13/site-packages/alembic/testing/suite/test_autogen_computed.py", line 88, in AutogenerateComputedTest
    @config.requirements.computed_reflects_normally
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'SuiteRequirements' object has no attribute 'computed_reflects_normally'