Comment #2 on issue 1547 by [email protected]: Integer class problems in
functions 'abs', 'mod'/'rmod'.
http://code.google.com/p/sympy/issues/detail?id=1547
Since, as I understand it, there is only one of any Integer, this can't be
fixed as it currently stands:
a=Integer(3)
b=Integer(3)
a.p=4
a
4
b
4
x + 3
x + 4
a.p = 3
x + 3 # cached so...
x + 4
y + 3
y + 3
The mod issue is fixed:
a%3
1
type(_)
<class 'sympy.core.numbers.One'>
I'm not sure about using self.func or self.__class__ (someone else would
have to comment, but I don't think that would be too hard to fix and should
be done for Number, Float, Integer, Rational as appropriate).
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