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Clarify wordings and fix typo in compound statements page #149666

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Clarify wordings and fix typo in compound statements page #149666

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7 changes: 3 additions & 4 deletions Doc/reference/compound_stmts.rst
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Expand Up @@ -294,9 +294,8 @@ was translated to ::

This means the exception must be assigned to a different name to be able to
refer to it after the :keyword:`!except` clause.
Exceptions are cleared because with the
traceback attached to them, they form a reference cycle with the stack frame,
keeping all locals in that frame alive until the next garbage collection occurs.
Exceptions are cleared because their attached tracebacks form a reference cycle with the stack
frame, keeping all locals in that frame alive until the next garbage collection occurs.

.. index::
pair: module; sys
Expand Down Expand Up @@ -341,7 +340,7 @@ can have either :keyword:`except` or :keyword:`!except*` clauses, but not both.
The exception type for matching is mandatory in the case of :keyword:`!except*`,
so ``except*:`` is a syntax error. The type is interpreted as in the case of
:keyword:`!except`, but matching is performed on the exceptions contained in the
group that is being handled. An :exc:`TypeError` is raised if a matching
group that is being handled. A :exc:`TypeError` is raised if a matching
type is a subclass of :exc:`!BaseExceptionGroup`, because that would have
ambiguous semantics.

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