How can I make ipdb show more lines of context while debugging?

Question

By default, during debugging in IPython, ipdb shows one line above and one line below the current position in code.

Is there an easy way to make the area shown a bit b

Answer 1

As a quick complement to https://stackoverflow.com/a/35883288/895245 this is the one liner that you generally want to add to the code you want to debug:

__import__('ipdb').set_trace(context=21)

You likely want to add a shortcut for that from your editor, e.g. for Vim snipmat I have:

snippet ipd
    __import__('ipdb').set_trace(context=21)

so I can type just ipd and it expands to the breakpoint. Then removing it is easy with dd since everything is contained in a single line.

Feature request for ipdb to increase the default context size: https://github.com/gotcha/ipdb/issues/147