Message270136
| Author |
eric.smith |
| Recipients |
Demur Rumed, eric.smith, mjpieters, serhiy.storchaka, ztane |
| Date |
2016年07月10日.22:18:43 |
| SpamBayes Score |
-1.0 |
| Marked as misclassified |
Yes |
| Message-id |
<1468189123.48.0.294882083003.issue27078@psf.upfronthosting.co.za> |
| In-reply-to |
| Content |
> And the expected performance for optimal `f'X is {x}'` code would
> be *faster* than `"'X is %s' % (x,)"` which still needs to
> interpret the string at runtime, and build a proper tuple object
> on stack.
That's not necessarily true. The f-string version still needs to invoke the .format() method on the object, instead of only working for a handful of hard-coded types.
I'm not saying there aren't optimization opportunities, but it may be that %-formatting is always faster. |
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