That's this bit:
```
except (A, B):
^^^^^^
```
bpo-43149 currently calls it an "exception group", but that conflicts with PEP 654 -- Exception Groups and except*
```
>>> try:
... pass
... except A, B:
... pass
Traceback (most recent call last):
SyntaxError: exception group must be parenthesized
```
some alternatives:
exception classinfo must be parenthesized (classinfo so named from the parameter to issubclass)
exception sequence must be parenthesized
see also:
- https://github.com/python/cpython/pull/24467#discussion_r628756347
- https://www.python.org/dev/peps/pep-0654/
Given it requires ()s it is probably better to call it an "exception sequence" or even go fully to "exception tuple" in order to avoid confusion and tie in with the other meanings of the required syntax.
-gps