Desired SymPy API Methods and functions

[phantomas1234]

Based on a discussion on gitter, here the functions that I'd personally would love to see in symengine.py.

For Add and Mul etc.

• .is_Add
• .is_Mul
• .is_Atom
• .is_Number
• .atoms
• .as_coefficients_dict
• .xreplace

and

• sympy.Integer
• sympy.RealNumber
• sympy.PolynomialError

[certik]

Thanks @phantomas1234 for the suggestions. That shouldn't be hard to implement.

[isuruf]

@phantomas1234,

• For RealNumber, use RealMPFR for arbitrary precision including double precision, RealDouble for just double precision)
• .subsshould be equivalent to .xreplace

Polynomial support is something we are looking at implementing this summer.

[isuruf]

@phantomas1234, everything is implemented now except PolynomialError. We will add that once Polynomials are fully implemented in SymEngine.

[phantomas1234]

@isuruf That's is very cool, thanks! I'll give symengine another try now and see if I can work around PolynomialError. It also great that symengine and the bindings can easily be installed with conda now 👍