PyXB: Python XML Schema Bindings / Tickets / #91 Problem with fractionDigits violation

Eduard Carreras i Nadal - 2010-09-13

attachment _pyxb-decimal_type.patch_ added

Patch to use Python Decimal as base class
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Peter A. Bigot - 2011-05-22

status changed from new to accepted

milestone changed from PyXB 1.1.2 to PyXB 1.1.3

While Python's decimal package provides exact values, which is good, it also incorporates a concept of significant digits that is not present in XML's xs:decimal, which may not be good. In particular, it's going to complicate the translation between lexical and value representations.
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Peter A. Bigot - 2011-09-09

milestone changed from PyXB 1.1.3 to PyXB 1.1.4
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Peter A. Bigot - 2012-06-13

milestone changed from PyXB 1.1.4 to PyXB 2.0.0

I'm still concerned about how to reconcile the significant digits capabilities, so am pushing this off to the next major revision where incompatibilities are more likely to be allowed.
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Peter A. Bigot - 2013-03-13

See additional information at https://sourceforge.net/mailarchive/message.php?msg_id=30592801

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status changed from accepted to closed
resolution set to fixed
milestone changed from PyXB 2.0.0 to PyXB 1.2.4

The fix for this is now in the next branch of the git repository. Because Python's decimal.Decimal class is not fully interoperable with its float class, this may result in user-level breakage.

commit 7504056ec5b4359f02182f40d2eea5b8f71dc31d
Author: Peter A. Bigot <pab@pabigot.com>
Date:   Wed Feb 5 12:44:53 2014 -0600

    trac/91: Problem with fractionDigits violation

    Change the value type for xs:decimal to be decimal.Decimal from its
    former type of types.FloatType.  This should make PyXB conformant with
    xs:decimal in terms of the totalDigits and fractionDigits constraining
    facets.

    This is an interface change: some arithmetic operations between
    datatypes.decimal and Python floats are now likely to fail.

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#91 Problem with fractionDigits violation

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