[Python-Dev] PEP 8: Discourage named lambdas? (original) (raw)

Scott David Daniels Scott.Daniels at Acm.Org
Sat May 3 08:23:59 CEST 2008


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.getfoo = 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.getfoo = lambda: FakeFoo() is acceptible style, but getfoo = 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



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