The removed unittest duplicates the other one (test_signature_on_builtins_no_signature)

Issue #20411: Use readline.get_current_history_length to check for the presence of a history, rather than get_history_item, which assumes a history is present.

annotate text signatures in docstrings, resulting in fewer false
positives.  "self" parameters are also explicitly marked, allowing
inspect.Signature() to authoritatively detect (and skip) said parameters.

Issue #20326: Argument Clinic now generates separate checksums for the
input and output sections of the block, allowing external tools to verify
that the input has not changed (and thus the output is not out-of-date).

around them

is present.

is present.

the rest in Signature.__str__. #20356

Some classes defined in C may not have the '__module__' attribute, so
we now handle this case to avoid having unexepected AttributeError.

called during shutdown.  Emitting resource warning in __del__ no longer fails.
Original patch by Antoine Pitrou.

successful when called during nulling out of modules during shutdown.
Misleading exception no longer raised when resource warning is emitted
during shutdown.

signals

arguments.  Patch by Glenn Langford.

Patch by Nikolaus Rath.

make it actually gives some help when clicked. Patch by Guilherme Simões.

make it actually gives some help when clicked. Patch by Guilherme Simões.

removed even for bound methods. (Inspect.signature does, see 20401.)