Explainability

[gleitz]

Would be nice to pass a flag (--explain) and get the way that howdoi chose the answer.

[gmelodie]

So here's my design idea for that feature (two birds one stone):

1. Successful search without --explain, nothing new happens
2. Successful search with --explain: show where the answer came from
3. Unsuccessful search (with or without --explain): show where the answer was supposed to come from (plus the error?)

This would introduce the new functionality and also fix problems like #331.

[gleitz]

Might be interesting to also show counts (hits on search, answers on Stack Overflow, etc)

[gleitz]

I think that #344 is most of the way there. We'll need to look at what happens when you search for a query that returns nothing

python -m howdoi.howdoi ksjfksdjfksd fkdsj -x

cc @KimaruThagna

[gleitz]

We also want to not show (use --explain to learn why) when you have already passed -x

[atodorov]

@gleitz do you mind assigning this to MLH fellow @KimaruThagna

[gleitz]

Yes, this is very close and I would like @KimaruThagna's help. BTW I for some reason can't use the Assignees section so I just mention you in the comment here.

[gmelodie]

I think @KimaruThagna needs to have replied to (aka participated in) this issue at some point so we can assign him.

[gleitz]

Proposed PR: #381