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From: Ian Kelly <ian.g.kelly@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: What is a function parameter =[] for?
Date: Thu, 19 Nov 2015 12:25:21 -0700
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On Thu, Nov 19, 2015 at 12:19 PM, Chris Angelico <rosuav@gmail.com> wrote:
> But you're
> saying that it "simply substitute[s] the expression", which would mean
> that "func()" is exactly the same as "func(y)". A function default
> argument is therefore able to STEAL STUFF FROM THE CALLER'S SCOPE.
> Sorry for shouting, but if that ain't bizarre, I don't know what is.

It's like pass-by-name, but in reverse.