Kent Johnson a écrit : > Pierre Barbier de Reuille wrote: > [...] > > >>Well, when using the "%" operator on string always put a tuple or a >>dictionnary on the RHS : >> >>print "Connection from %s" % (info,) > > > No, you can put a single item on the right without putting it in a tuple: > >>> print 'x = %s' % 3 > x = 3 >
I never said it does not work, but I say it is Bad Practice (TM). The reason (as I already explained) is, if the variable suddently happen to become a tuple the semantic of your print statement will change ! Just try that if you're not convinced : >>> def foo(x): ... print "x = %s" % x >>> foo(3) >>> foo((3,)) >>> foo((1,2,3)) Now, if you change the function with : >>> def foo(x): ... print "x = %s" % (x,) It will always work as intended ! And when you're debugging this is *very* important ! Pierre -- Pierre Barbier de Reuille INRA - UMR Cirad/Inra/Cnrs/Univ.MontpellierII AMAP Botanique et Bio-informatique de l'Architecture des Plantes TA40/PSII, Boulevard de la Lironde 34398 MONTPELLIER CEDEX 5, France tel : (33) 4 67 61 65 77 fax : (33) 4 67 61 56 68 _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
