Self function

Lie Ryan lie.1296 at gmail.com
Wed May 6 13:49:15 CEST 2009


Luis Zarrabeitia wrote:
> Btw, is there any way to inject a name into a function's namespace? Following 
> the python tradition, maybe we should try to create a more general solution!

How about a mechanism to pass arguments that are optional to accept?

So (in the general case) the caller can call a function with certain 
arguments, but unless the function explicitly accept it, the argument 
will be discarded.

With this, the injecting a local would simply be a case of adding an "I 
accept the argument" statement.


Sort of like this:

def func():
     ''' I reject '''
     pass

func(@somearg='Feel free to accept this arg')

def func(@somearg):
     ''' I accept '''
     print(somearg)

func(@somearg='Feel free to accept this arg')


Then on the case of injecting locals is simply by wrapping the function 
with a function that will inject various argument to the function and 
the function selectively choose which arguments they want to accept.

def needinfo(f):
     # let's assume there is an inspect code here
     func(@__name__=yournameis,
          @__call__=yourfunction,
          @__code__=yourcode,
          @__yoursub__=youryo,
          @__yourlim__=yoururso,
          @__yourina__=yournisk,
          @__yourlmes__=youridna,
          @__yoursage__=yourpped
     )

@needinfo
def func(@__name__, @__call__):
     print 'Hi, my name is %s and to call me press %s' % (__name__, 
__call__)

Does it sounds like a feature smell?



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