[Python-Dev] functools.compose to chain functions together

"Martin v. Löwis" martin at v.loewis.de
Mon Aug 17 22:53:14 CEST 2009

> and I don't see any reason why a compose() function shouldn't do the 
> same.

I was tricked into reading it different when used with getters, i.e.


is too easy (IMO) to read as applying foo.name.age on all elements of
the list.

> (Aside: how do I look at the patch? The only link I have is here:
> http://mail.python.org/pipermail/patches/2007-February/021687.html
> but I can't see how to get to the patch from there.)

It's best to search for "compose" in the bug tracker:



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