Can global variable be passed into Python function?
ben+python at benfinney.id.au
Sat Mar 1 11:48:40 CET 2014
Marko Rauhamaa <marko at pacujo.net> writes:
> Ben Finney <ben+python at benfinney.id.au>:
> > Since you don't care about identity, only that the objects have
> > different values, you should be comparing for equality with ‘==’.
> Ok, one last attempt.
> I need *identifiers*.
And, as you've realised, without an Enum pattern you have the option of
using string *values* — because it's the values you want to see in error
The *identity* of the values doesn't matter. Any string of the given
value will work fine.
So don't fool the reader into thinking you actually care about object
identity; don't use ‘is’ for comparing these values. Use ‘==’, since
that's all that matters for getting a value that will work fine.
> The same program still works (and still uses "is" for identity tests,
> mind you).
You have provided no justification for using an identity test. It
confuses the matter by pretending you care about object identity, when
you *do not* as evidenced by all your arguments so far.
The equality operator ‘==’ is clearer for your purpose, and less
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