[Python-Dev] PEP 8: Discourage named lambdas?

[Scott David Daniels]

Mike Klaas wrote:
> ... A common pattern for me is to replace an instances method with a
> lambda to add monitoring hooks or disable certain functionality:
>    inst.get_foo = lambda: FakeFoo()
> This is not replacable in one line with a def (or without locals() 
> detritius).  Assuming this is good style, it seems odd that
>    inst.get_foo = lambda: FakeFoo()
> is acceptible style, but
>    get_foo = lambda: FakeFoo()
But surely, none of these are great style, and in fact the lambda
lures you into using it.

I'd propose a far better use is:
     inst.get_foo = FakeFoo
or
     get_foo = FakeFoo

--Scott David Daniels
Scott.Daniels at Acm.Org