Docs: grammar in Counter dictionary methods note is slightly unclear

[SanJJ1]

Documentation

In Doc/library/collections.rst, the sentence that introduces the two Counter-specific method overrides reads:

The usual dictionary methods are available for Counter objects except for two which work differently for counters.

This sentence ends with a period, but the two methods it refers to (fromkeys and update) are defined immediately below it. Because the sentence doesn't introduce them as a list, the connection to the following entries is easy to miss on a first read.

Suggested change

The usual dictionary methods are available for Counter objects except for these two which work differently for counters:

Adding "these" makes the reference concrete, and changing the period to a colon makes the following fromkeys/update entries read as the list being introduced.

PR: #148882

Linked PRs

• gh-148883: Docs: clarify grammar in Counter dictionary methods note #148882