Author terry.reedy
Recipients docs@python, eric.araujo, ezio.melotti, gvanrossum, o11c, rhettinger, serhiy.storchaka, steven.daprano, storymode7, terry.reedy
Date 2019-08-12.03:38:14
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IDLE's Shell has treated SyntaxWarnings as errors since 2001.  I don't know if any other IDE's do the same.  Raymond's example did not concern me, as I think not calling known non-callables is preferable.

But not executing literal-with-is code, such as "a = 1; a is 1" and "0 is ''" is wrong.  See msg349431 of #34857 for more discussion of these cases.
Date User Action Args
2019-08-12 03:38:14terry.reedysetrecipients: + terry.reedy, gvanrossum, rhettinger, ezio.melotti, eric.araujo, steven.daprano, docs@python, serhiy.storchaka, o11c, storymode7
2019-08-12 03:38:14terry.reedysetmessageid: <>
2019-08-12 03:38:14terry.reedylinkissue15248 messages
2019-08-12 03:38:14terry.reedycreate