[Python-Dev] assignment expressions: an alternative proposal (original) (raw)
Steven D'Aprano steve at pearwood.info
Tue Apr 24 12:57:45 EDT 2018
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On Wed, Apr 25, 2018 at 02:42:08AM +1000, Chris Angelico wrote:
> from math import * > process(arg, (pi = 1), pi+1) # allowed
That's not allowed at local scope (at least, it's not allowed at function scope - is there any other "local scope" at which it is allowed?).
Of course: local just means the current scope, wherever you happen to be. Inside a function, local is the current function scope. Inside a class body, local is the class body scope. At the top level of the module, local means the module scope (and locals() returns the same dict as globals()).
If Yury means for this "cannot mask existing variables" to only operate inside functions, that means that you can mask existing variables if you use assignment expressions in class bodies or top-level module code.
-- Steve
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