#18578: Python 3 preparation: Special function __div__() is used no more in Py3
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Reporter: wluebbe | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.8
Component: misc | Resolution:
Keywords: python3 | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by wluebbe):
To observe the actual code behavior (besides reading the Python docs) I
created a small test script (see the attached file). A summary of the
output under various conditions is here:
{{{
__div__ is defined
__truediv__ is defined
__floordiv__ is defined
__idiv__ is defined
__itruediv__ is defined
__ifloordiv__ is defined
python version: 2.7.10 (default, May 23 2015, 09:44:00) [MSC v.1500 64 bit
(AMD64)]
from __future__ import division is NOT active
function: __div__ 115 10 ## operator is /; result=cla(11)
function: __floordiv__ 115 10 ## operator is //; result=cla(11)
function: __idiv__ 215 10 ## operator is /=; result=cla(21)
function: __ifloordiv__ 215 10 ## operator is //=; result=cla(21)
Python version: 2.7.10 (default, May 23 2015, 09:44:00) [MSC v.1500 64 bit
(AMD64)]
from __future__ import division is active
function: __truediv__ 115 10 ## operator is /; result=cla(11.5)
function: __floordiv__ 115 10 ## operator is //; result=cla(11)
function: __itruediv__ 215 10 ## operator is /=; result=cla(21.5)
function: __ifloordiv__ 215 10 ## operator is //=; result=cla(21)
Python version: 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40) [MSC
v.1600 64 bit (AMD64)]
from __future__ import division is NOT active
function: __truediv__ 115 10 ## operator is /; result=cla(11.5)
function: __floordiv__ 115 10 ## operator is //; result=cla(11)
function: __itruediv__ 215 10 ## operator is /=; result=cla(21.5)
function: __ifloordiv__ 215 10 ## operator is //=; result=cla(21)
Python version: 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40) [MSC
v.1600 64 bit (AMD64)]
from __future__ import division is active
function: __truediv__ 115 10 ## operator is /; result=cla(11.5)
function: __floordiv__ 115 10 ## operator is //; result=cla(11)
function: __itruediv__ 215 10 ## operator is /=; result=cla(21.5)
function: __ifloordiv__ 215 10 ## operator is //=; result=cla(21)
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/18578#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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