```
cfme/tests/control/test_explorer_basic.py:16: in <module>
>   from cfme.control import explorer
cfme/control/explorer.py:21: in <module>
>   import cfme.web_ui.expression_editor as editor
cfme/web_ui/expression_editor.py:8: in <module>
>   from singledispatch import singledispatch
E   ImportError: No module named singledispatch
```

singledispatch has been replace with multimethods, and is no longer in requirements.