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Sun Mar 21 00:46:09 CET 2010 · https://mail.python.org/pipermail/python-dev/2010-March/098627.html

On Sat, Mar 20, 2010 at 11:20 PM, Greg Ewing
<greg.ewing at canterbury.ac.nz> wrote:
> * Decimal and float really belong side-by-side in the
> tower, rather than one above the other. Neither of them is
> inherently any more precise or exact than the other.

Except that float is fixed-width (typically 53 bits of precision),
while Decimal allows a user-specified, arbitrarily large, precision;
so in that sense the two floating-point types aren't on an equal
footing.

Mark

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[Python-Dev] Mixing float and Decimal -- thread reboot