[Python-Dev] Replacement for print in Python 3.0 (original) (raw)

Trent Mick trentm at ActiveState.com
Tue Sep 6 20:02:44 CEST 2005

[Barry Warsaw wrote]

Also, we already have precedence in format+print in the logging package. I actually think the logging provides a nice, fairly to use interface that print-ng can be modeled on.

The main reason for doing that in the logging package is for performance: processing the args into the format string can be deferred until the logging system knows that the log message will actually be used. I'm not saying that the separation of 'fmt' and args in the logging methods doesn't have the other benefit of clarity:

log.debug("%s %s %s %s ...", arg1, arg2, arg3,
          really_really_long_arg4,)                      # nicer
log.debug("%s %s %s %s ..." % (arg1, arg2, arg3,
                               really_really_long_arg4)) # icky

but the performance reason doesn't apply to the printf()/write() discussion here.

Trent

-- Trent Mick TrentM at ActiveState.com

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