Tim Peters <t...@python.org> added the comment:

Since this depends on the platform libm implementation of pow(), I'm closing 
this as "won't fix".

Steve, on the chance you're serious ;-) , there are implementations of the 
"constructive reals", which indeed act like infinite-precision floats.  But 
they tend to be very slow, and, e.g., testing two of them for equality is, in 
general, undecidable even in theory.  Here's one such:

https://www.chiark.greenend.org.uk/~sgtatham/spigot/

----------
resolution:  -> wont fix
stage:  -> resolved
status: open -> closed
versions:  -Python 3.7

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue37787>
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