Macros in Python?

Johann Hibschman jhibschman at yahoo.com
Thu Apr 10 20:52:44 CEST 2003


Dominic <oblivious at web.de> writes:

> > Alternatively, you can curry the above function:
> >     def with_root_privs(func):
> >         def call(func, *args, **kwargs):
> >             save_euid = os.geteuid()
> >             os.seteuid(0)
> >             try:
> >                 func(*args, **kwargs)
> >             finally:
> >                 os.seteuid(save_euid)
> >         return lambda *args, **kwargs: call(func, *args, **kwargs)

> Thanks. This one is also very good. :-)
> Interesting idea to use a closure to build
> a function wrapper.

Hm.  Why not just do:

def with_root_privs(func):
    def call(*args, **kwargs):
        save_euid = os.geteuid()
        os.seteuid(0)
        try:
            func(*args, **kwargs)
        finally:
            os.seteuid(save_euid)
    return call

I don't see what that extra layer of indirection is gaining you.

-Johann




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