diff options
| -rw-r--r-- | Doc/reference/compound_stmts.rst | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/Doc/reference/compound_stmts.rst b/Doc/reference/compound_stmts.rst index 89634818..c3c7811 100644 --- a/Doc/reference/compound_stmts.rst +++ b/Doc/reference/compound_stmts.rst @@ -343,7 +343,7 @@ the case of :keyword:`except`, but in the case of exception groups we can have partial matches when the type matches some of the exceptions in the group. This means that multiple :keyword:`!except*` clauses can execute, each handling part of the exception group. -Each clause executes once and handles an exception group +Each clause executes at most once and handles an exception group of all matching exceptions. Each exception in the group is handled by at most one :keyword:`!except*` clause, the first that matches it. :: @@ -364,10 +364,22 @@ one :keyword:`!except*` clause, the first that matches it. :: | ValueError: 1 +------------------------------------ + Any remaining exceptions that were not handled by any :keyword:`!except*` clause are re-raised at the end, combined into an exception group along with all exceptions that were raised from within :keyword:`!except*` clauses. +If the raised exception is not an exception group and its type matches +one of the :keyword:`!except*` clauses, it is caught and wrapped by an +exception group with an empty message string. :: + + >>> try: + ... raise BlockingIOError + ... except* BlockingIOError as e: + ... print(repr(e)) + ... + ExceptionGroup('', (BlockingIOError())) + An :keyword:`!except*` clause must have a matching type, and this type cannot be a subclass of :exc:`BaseExceptionGroup`. It is not possible to mix :keyword:`except` and :keyword:`!except*` |