On 27 mar, 17:06, Patrick Maupin <pmau...@gmail.com> wrote: > On Mar 27, 10:24 am, vsoler <vicente.so...@gmail.com> wrote: > > > > > Hi, > > > Still learning Python, now decorators. > > > Before diving deeply into decorators, I'd like to apply a function to > > another function. > > > My "extremely simple function" should print number 3, then the sum of > > its 2 arguments. > > > Say that I call f(5,7) > > I'd like to get, somehow, 3 then 12. > > > I've tried the following: > > > def d(f): > > print 3 > > return f > > > def f(a, b): > > print a+b > > > f=d(f) > > > However, it does not work. Calling f(5,7) only returns 12, (3 is > > missing) > > How should I proceed? > >>> def d(f): > > ... def wrapper(*args): > ... print 3 > ... return f(*args) > ... return wrapper > ...>>> def f(a, b): > > ... print a + b > ...>>> f = d(f) > >>> f(5, 7) > > 3 > 12 > > HTH, > Pat
Pat, I think some lines are missing. I don't see "d" function defined. Any lines above def wrapper? Thank you -- http://mail.python.org/mailman/listinfo/python-list
