According to is it bad, you can use some unicode characters, but not all: You are restricted to characters identified as letters.
α = 3
Σ = 3
√ = 3
File "", line 1
√ = 3
^
SyntaxError: invalid character in identifier
Besides: I think it is very cool to be able to use unicode as identifiers - and I wish, i could use all.
I use the neo keyboard layout, which gives me greek and math symbols on extra layers:
αβχδεφγψιθκλνοπφστ[&ωξυζ
∀⇐CΔ∃ΦΓΨ∫Λ⇔Σ∈QR∂⊂√∩Ξ
Arne Babenhauserheide
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