[Python-ideas] Allow using symbols from Unicode block "Superscripts and Subscripts" in identifiers

[Roman Inflianskas]

It's really useful that python 3 allows me to use some Unicode symbols (as specified in https://docs.python.org/3.4/reference/lexical_analysis.html#identifiers[1]), especially Greek symbols for mathematical programs. But when I write mathematical program with lots of indices I would like to use symbols from block "Superscripts and Subscripts" (as id_continue), for example: 

⁴₂₍₎

I don't see any problems with allowing yet another subset of Unicode symbols. In Julia, for example, I can use them without problems.

-- 
Regards, Roman Inflianskas

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[1] https://docs.python.org/3.4/reference/lexical_analysis.html#identifiers
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