Can global variable be passed into Python function?
Mark Lawrence
breamoreboy at yahoo.co.uk
Sun Mar 2 11:53:06 EST 2014
On 02/03/2014 16:23, Chris Angelico wrote:
>
> A switch block that works with constants and equality *can* be turned
> into a dict. If the constants are hashable, use them as the keys
> directly; if they're not hashable and/or you want to use object
> identity as the criterion (effectively like using 'is' rather than
> '==' for your case statements), use id(x) as the keys, and make sure
> you have other references to the objects. Then it'll be fine as a
> straight-up dict.
>
> If the switch block uses inequalities, then it suffers from the same
> problem as the try/except block - it's inherently ordered, in case
> (pun intended) there's a switched-on value that matches more than one.
> (You could possibly optimize the int case, but that would be way WAY
> too specific for a generic language structure.)
>
> ChrisA
>
You clearly don't get my point. I *DON'T* want to use stupid constants
and stupid equalities, I want to use identities. I *DON'T* want to use
stupid ==, I want to use 'is'. I *DON'T* care how many people with
years of experience of Python tell me that this is the wrong thing to
do, that is how I am going to do it. So, for the final time of asking,
how do I do the above with, and only with, the identity, even if you
stupidly keep on trying to tell me that this is wrong?
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
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