Section 4 of the Standard Library reference currently includes the two following sections (amongst others):

4.6. Sequence Types — str, bytes, bytearray, list, tuple, range
4.9. memoryview type

This is crazy - memoryview, a fairly niche type, gets its own second tier section on the main table of contents, while str, one of the most important types in Python, is tucked away under the generic "Sequence Type" heading?

I propose that these sections be rearranged as:

4.6 Sequence Types - list, tuple, range
4.7 Text Types - str
4.8 Binary Data Types - bytes, bytearray, memoryview

The Set Types and Mapping Types sections would slide down to sections 4.9 and 4.10 to make room for the two new sections.