On Apr 13, 3:45 pm, Aaron Brady <castiro...@gmail.com> wrote: > On Apr 13, 5:11 am, Michel Albert <exh...@gmail.com> wrote: > > > A small foreword: This might look like a cherrypy-oriented post, and > > should therefore go to the cherrypy group, but if you read to the end, > > you'll see it's a more basic python problem, with cherrypy only as an > > example. ;) > > > From the decorator PEP (318) I get it that you can /add/ parameters to > > a call. Say you do something like this: > > > @mydeco( foo="bar" ) > > def myfunc( hello ): > > print foo, foo > snip > > I would prefer a syntax like this (http://python.pastebin.com/ > > f462bc29c) > > > class MyController(Controller): > > > @expose() > > @skinnable > > @translatable > > def index(self): > > return "Hello skinned world" > > > @expose() > > @skinnable > > @translatable > > def foo(self): > > return "bar" > > snip > > more future proof. > > snip > > Sure. Just pop the keywords you want from the dictionary, if they > exist. > > def take_ab( fun ): > def newfun( *ar, **kw ): > aval= kw.pop( 'a', None ) > bval= kw.pop( 'b', None ) > print( 'aval %r and bval %r popped'% ( aval, bval ) ) > res= fun( *ar, **kw ) > return res > return newfun > > @take_ab > def f( c= 42, d= 'some' ): > print( 'in f, c= %r, d= %r'% ( c, d ) ) > > f( a= 'paramA', b= 'paramB', c= 'other number' ) > > /Output: > > aval 'paramA' and bval 'paramB' popped > in f, c= 'other number', d= 'some' > > As you can see, 'a', 'b', and 'c' were passed to 'f', but 'f' only > received 'c', as well as its default value for 'd'. So long as you > only need to pass by keyword, not position, it's pretty easy. It's > harder if the parameter you want might have been passed by either, and > you need to remove it from whichever one it was passed by.
What does the @take_ab do ? -- http://mail.python.org/mailman/listinfo/python-list
