ANN: GMPY 1.10 alpha with support for Python 3
casevh at gmail.com
Mon Jul 6 07:04:36 CEST 2009
An alpha release of GMPY that supports Python 2 and 3 is available.
GMPY is a wrapper for the GMP multiple-precision arithmetic
library. The MPIR multiple-precision arithmetic library is also
supported. GMPY is available for download from
Support for Python 3 required many changes to the logic used to
convert between different numerical types. The result type of some
combinations has changed. For example, 'mpz' + 'float' now returns
an 'mpf' instead of a 'float'. See the file "changes.txt" for more
In addition to support for Python 3, there are several other
changes and bug fixes:
- Bug fixes in mpz.binary() and mpq.binary().
- Unicode strings are accepted as input on Python 2.
(Known bug: works for mpz, fails for mpq and mpf)
- The overhead for calling GMPY routines has been reduced.
If one operand in a small integer, it is not converted to mpz.
- 'mpf' and 'mpq' now support % and divmod.
Comments on provided binaries
The 32-bit Windows installers were compiled using MPIR 1.2.1 and
will automatically recognize the CPU type and use code optimized for
Please test with your applications and report any issues found!
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