Update downloading-multiple-records-using-query-strings lesson to Pyt…

[frederik-elwert]

Contributes to #1460.

In the course of updating the lesson, I also fixed a few small errors. I removed the newDir function, which was defined but then never used.

[acrymble]

Thanks for doing so much work @frederik-elwert. I have tried the entire lesson from start to finish and noticed 2 small errors.

First, the following sentence has a typo (which I sure was mine originally):

you are trying to create a director with a * in it (should say "directory")

--

Secondly, the obo.py code chunks have some mistaken duplication in the final few examples. In particular the startValue=0 variable, and the code to create a new directory are accidentally included twice.

[acrymble]

It looks like this pull request isn't coming direclty from our repository so I can't make the changes myself. If you make the fixes @frederik-elwert I will review and approve.

[frederik-elwert]

Thanks for reviewing and catching those! Checked twice, I hope I spotted all the duplicates.

[acrymble]

Thanks. I'm afraid your fix has introduced a new typo.

There's a double-tab now before "os.makedirs(cleanQuery)" in four code examples. This extra tab should be removed. Otherwise this is ready to republish and thanks for the work @frederik-elwert .

[frederik-elwert]

This is weird, I cannot remember touching that part. But thanks for spotting, should be fixed now.

[acrymble]

I have tested this code and the changes and I believe it is ready to push to the live site. Thank you for all of your hard work and contributions to the project.

[acrymble]

@svmelton @alsalin As the managing editors, I'll leave this for you to merge. But I approve of the changes.