On Nov 6, 2016 7:32 PM, "Nathaniel Smith" <[email protected]> wrote: > > [...] > > Some other use cases: > > Log some complicated object, but only pay the cost of stringifying the > object if debugging is enabled: > > log.debug!(f"Message: {message_object!r}")
Would the log.debug implementation need to fetch the context to evaluate the delayed expression (say by using sys._getframe) or would that be bound? Is a frame necessary or just a (bound?) symbol table? Could a substitute be provided by on evaluation? Curious how this looks to the callee and what is possible. Also what is the meaning (if desirable) of something like: def debug!(...): pass Persistent delayed calls? Delayed default arguments? Something else? Not valid?
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