On 12 Sep, 19:17, [EMAIL PROTECTED] wrote: > It seems like using something other than a literal string in the > message is the way to go, since I assume that its __repr__() won't get > called unless the logger is actually going to log a message for it. > Is that right? > > Are any of the other methods likely to provide as-good or better > performance?
You're almost right - it's __str__() rather than __repr__() that gets called, when str() is called on the msg object passed in the logging call. The str() call happens in LogRecord.getMessage(), which is called (indirectly) from a handler's emit() when the message needs to be formatted. So - I don't think that the other methods will provide better performance, as this approach is the simplest and most direct. I haven't done any tests to confirm this, though :-( Note that in order to avoid computation of *other* data passed to the logging call - i.e. other arguments - you should still use the logger.isXXXEnabled() idiom to avoid unnecessary computation, where performance is an issue. Best regards, Vinay Sajip -- http://mail.python.org/mailman/listinfo/python-list
