Power operator, why does -2**3 throws?

Cyril Auburtin cyril.auburtin at gmail.com
Fri Oct 14 11:30:28 UTC 2016

I would expect `-2**3` to return -8, or `-2**2 == -4`, since it should be
like `-(2**3)`

Firefox gives a clearer error then Chrome with:
> SyntaxError: unparenthesized unary expression can't appear on the
left-hand side of '**'

Is there a reason for this restriction? Python does it `-2**3` fine
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