Using ipdb or pdb inside a source block

Is it possible to use the debugger in a source block, in the same way that you can for jupyter?

I get the following error:

`StdinNotImplementedError: raw_input was called, but this frontend does not support input requests.
`

When I use
```python
__import__("ipdb").set_trace()
```

In an org block with this header

`#+begin_src ipython :session :exports both :results raw output drawer :async t`