Hi Mohammad,
In addition to what Rhodri James has already well pointed out, here
are two additional thoughts on this.
At the moment, the keyword `global` is a marker to say that the
respective variable is /modified/ by a function. Your suggestion
would invert that meaning and might therefore add more confusion than
what it would solve.
Moreover, to provide yet another alternative, you could also define
something along the lines of:
this = sys.modules[__name__]
and then write:
MATCH value:
CASE this.x:
...
Of course, this is a bit of a hack and not that much different to
using SimpleNamespace. But it demonstrates that any such keyword
would not really add that much power or save any keystrokes.
In the end, I can well imagine that a future version of Python might
add something like a "read and compare" marker to patten matching.
But it is probably a good idea to start with a set of fully working
but rather minimalistic core features, and then let it grow and evolve
with time, guided by real use cases and issues that we run into.
Kind regards,
Tobias
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