#20194: expression conversion bug with Sympy functions
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Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.2
Component: symbolics | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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With the Sympy-1.0 upgrade (#20185)
{{{
sage: import sympy
sage: u = sympy.Function('u'); n = sympy.Symbol('n', integer=True)
sage: sympy.sympify(3*u(n), evaluate=False)
NotImplementedError: SymPy function 'u' doesn't exist
}}}
which disappears when `3*u(n)` is changed to `u(n)*3` or `u(n)`
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Ticket URL: <http://trac.sagemath.org/ticket/20194>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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