Added paragraph explaining that except clauses can't be empty; that
pass can be used if needed. By Dan Wolfe <wolfeman@apple.com>.
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@ -2751,6 +2751,10 @@ wildcard.
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Use this with extreme caution, since it is easy to mask a real
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programming error in this way!
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Each exception clause must have at least one line of executable code
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in the block. Comments are not executable code. If you want the
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exception clause to do nothing, use the \keyword{pass} statement.
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The \keyword{try} \ldots\ \keyword{except} statement has an optional
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\emph{else clause}, which must follow all except clauses. It is
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useful to place code that must be executed if the try clause does not
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