Daniel Arbuckle's Mastering Python
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Using keywords

Perhaps, the most useful way of accessing the index is to simply type keywords into the search box and see what it spits out.

If we ask to search for asyncio, we get back a collection of package names that have something to do with asyncio. The names are, of course, links to each package's detailed description on the index, which we can use to decide which package best suits our needs.

There's another way of accessing the index that is often nearly as useful as keyword searching and sometimes even more useful.