[Python-Dev] PEP 463: Exception-catching expressions

Stephen J. Turnbull turnbull at sk.tsukuba.ac.jp
Sat Feb 22 11:29:41 CET 2014

Antoine Pitrou writes:

 > Well, the only way to know that a key (or attribute) exists is to do
 > the lookup. What else would you suggest?

Do the lookup at the C level (or whatever the implementation language
is) and generate no exception, of course.  That's what would make it
possibly more efficient.

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