Expected behaviour

When a user imports an existing .ipynb file, IPython magics such as %matplotlib inline are converted to get_ipython().run_line_magic('matplotlib', 'inline'). There should be a corresponding from IPython import get_ipython import statement.

Actual behaviour

We do not currently add a from IPython import get_ipython cell on import, so the linter complains about get_ipython() being an undefined variable.