Orest Kozyar wrote: > Given a variable x that can either be None or a tuple of two floats [i.e. > (0.32, 4.2)], which syntax is considered most appropriate under Python > coding standards? > > if x and x[0] > 0: > pass > > =====OR===== > > if x: > if x[0] > 0: > pass
The first is fine. > In the first, I'm obviously making the assumption that if the first > condition evaluates to false, then the second condition won't be evaluated. > But, is this a good/valid assumption to make? Yes, this is guaranteed by the language. http://docs.python.org/ref/Booleans.html Kent _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
