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Re: How safe is this way of getting a default that allows None?

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  Re: How safe is this way of getting a default that allows None? Tim Chase <python.list@tim.thechases.com> - 2011-12-25 19:14 -0600

#17937 — Re: How safe is this way of getting a default that allows None?

On 12/25/11 18:49, Dan Stromberg wrote:
> How safe is this?  I like the idea.
>
> UNSPECIFIED = object()
>
> def fn(x, y=UNSPECIFIED):
>     if y is UNSPECIFIED:
>        print x, 'default'
>     else:
>        print x, y

safe?  It's idiomatic :)

-tkc

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