The Doc/library/stdtypes.rst page describes in detail the built-in types and their methods.  As suggested in #21777 (see the comments on Rietveld), it might be a good idea to group the documentation of some similar methods, such as {r|l|}just, {r|l|}strip, {r|}partition, {r|}index, and {r|}find.

This will remove some duplication, make the page shorter and easier to navigate, and make the methods easier to discover.  Adding tables containing the methods for each types has also been proposed.