On Oct 21, 5:40 am, Paul Rubin <no.em...@nospam.invalid> wrote:
> Phlip <phlip2...@gmail.com> writes:
> > def _scrunch(**dict):
> > result = {}
>
> > for key, value in dict.items():
> > if value is not None: result[key] = value
>
> > return result
>
> > That says "throw away every item in a dict if the Value is None".
> > Are there any tighter or smarmier ways to do that? Python does so
> > often manage maps better than that...
As James has suggested, you can 'clean the dict in place (as it's
mutable), you don't have to return a whole new object.
> Untested:
>
> def _scrunch(**kwargs):
> return dict(k,v for k,v in kwargs.iteritems() if v is not None)
>
> Note: it's best not to use "dict" as a parameter name,
Yes, likewise with any other builtin; if you use pychecker and/or
pylint routinely, they would warn you about this.
> since it is a
> built in function (dictionary constructor).
I don't think so:
>>> type(dict)
<type 'type'>
>>>
So you're not running a function, but creating an instance of a dict.
Best wishes,
John
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