Rene Nejsum <rene@...> writes:
So doing:
if log.debug.enabled(): log.debug( bla. bla. )
Add's 5-10% extra code lines, whereas if we could do:
log.debug( bla. bla )
at the same cost would save a lot of lines.
Bearing in mind that the first statement in the debug (and analogous methods) is a check for the level, the only thing you gain by having the same check outside the call is the cost of evaluating arguments. But you can also do this by passing an arbitrary class as the message object, which lazily evaluates only when needed. Contrived example: class Message(object): def __init__(self, func, x, y): # params should be cheap to evaluate self.func = func self.x = x self.y = y def __str__(self): return str(self.func(self.x**self.y)) # expense is incurred here logger.debug(Message(factorial, 2, 15)) With this setup, no if statements are needed in your code, and the expensive computations only occur when required. Regards, Vinay Sajip