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Python OpenMath 2.0 <http://www.openmath.org/standard/om20-2004-06-30/>__
implementation.
OpenMath <http://www.openmath.org/>__ is an extensible standard for
representing the semantics of mathematical objects.
::
pip install openmath
This package provides an object implementation of OpenMath, and XML parsing/serialization.
See py-scscp <https://github.com/OpenMath/py-scscp>__ for an example
of use.
The modules encoder and decoder provide XML de-serialization
for OpenMath objects.
::
from openmath import encoder, decoder, openmath as om xml = encoder.encode_xml(om.OMString('hello world')); xml <Element {http://www.openmath.org/OpenMath}OMSTR at 0x7fcb3cd82708> b = encoder.encode_bytes(om.OMString('hello world')); b b'
hello world ' decoder.decode_xml(xml) OMString('hello world', id=None) decoder.decode_bytes(b, snippet=True) OMString('hello world', id=None)
This package provides facilities for easy conversions from Python to
OpenMath and back. The module convert contains a Converter class, which
is used to implements this functionality. For convenienve, an instance of this
class, DefaultConverter is provided.
The two functions to_python() and to_openmath() do the conversion as
their names suggest, or raise a ValueError if no conversion is known.
By default, a Converter only implements conversions for basic Python types:
Furthermore, any object that defines an __openmath__(self) method
will have that method called by to_python.
Finally, this class contains a mechanism for registering converters.
::
from fractions import Fraction from openmath import openmath as om from openmath.convert import DefaultConverter as converter def to_om_rat(obj): ... return om.OMApplication(om.OMSymbol('rational', cd='nums1'), ... list(map(converter.to_openmath, [obj.numerator, obj.denominator]))) ... def to_py_rat(obj): ... return Fraction(converter.to_python(obj.arguments[0]), converter.to_python(obj.arguments[1])) ... converter.register(Fraction, to_om_rat, 'nums1', 'rational', to_py_rat) omobj = converter.to_openmath(Fraction(5, 6)); omobj OMApplication(OMSymbol('rational', 'nums1', id=None, cdbase=None), [OMInteger(5, id=None), OMInteger(6, id=None)], id=None, cdbase=None) converter.to_python(omobj) Fraction(5, 6)
The source code of this project can be found on GitHub <https://github.com/OpenMath/py-openmath>__. Please use GitHub
issues and pull requests to contribute to this project.
This work is supported by OpenDreamKit <http://opendreamkit.org/>__.
This work is licensed under the MIT License, for details see the LICENSE file.
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