[Python-Dev] locals(), closures, and IronPython... (original) (raw)

Greg Ewing greg.ewing at canterbury.ac.nz
Tue Mar 6 23:30:02 CET 2007

Andrew Dalke wrote:

def init(self, prec=None, rounding=None, traps=None, flags=None, roundingdecision=None, Emin=None, Emax=None, capitals=None, clamp=0, ignoredflags=None): ... for name, val in locals().items(): if val is None: setattr(self, name, copy.copy(getattr(DefaultContext, name))) else: setattr(self, name, val)

Hmmm. For things like that, maybe what you really want is to be able to give the ** arg a default value:

def init(self, **kwds = dict(rec=None, rounding=None, traps=None, flags=None, _rounding_decision=None, Emin=None, Emax=None, capitals=None, _clamp=0, _ignored_flags=None)) for name, val in kwds: ...

Although you can get a similar effect now by doing

  def __init__(self, **kwds):
     args = dict(prec=None, rounding=None,
               traps=None, flags=None,
               _rounding_decision=None,
               Emin=None, Emax=None,
               capitals=None, _clamp=0,
               _ignored_flags=None)
     args.update(kwds)
     for name, value in args:
        ...

So, no need for locals() here.

-- Greg

More information about the Python-Dev mailing list