Unwrap one-element exception tuple in `except`

Proprietary

A tuple containing only one exception type is needlessly verbose. This unwraps it to the plain except ExcType: form where the element is a name or dotted name. A tuple holding a comment or a starred element is left alone.

org.openrewrite.python.cleanup.SimplifySingleExceptionTuple

mod run . --recipe=org.openrewrite.python.cleanup.SimplifySingleExceptionTuple

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Unwrap one-element exception tuple in except

Unwrap one-element exception tuple in `except`