@@ -867,6 +867,32 @@ there is little need of new syntax and a confusion of statement vs

expression to achieve this.

Common objections

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Colons always introduce suites

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While it is true that many of Python's syntactic elements use the colon to

introduce a statement suite (if, while, with, for, etcetera), this is not

by any means the sole use of the colon. Currently, Python syntax includes

four cases where a colon introduces a subexpression:

* dict display - { ... key:value ... }

* slice notation - [start:stop:step]

* function definition - parameter : annotation

* lambda - arg list: return value

This proposal simply adds a fifth:

* except-expression - exception list: result

Style guides and PEP 8 should recommend not having the colon at the end of

a wrapped line, which could potentially look like the introduction of a

suite, but instead advocate wrapping before the exception list, keeping the

colon clearly between two expressions.

Copyright

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