Opened 5 years ago

Closed 5 years ago

#20194 closed defect (fixed)

expression conversion bug with Sympy functions

Reported by: rws Owned by:
Priority: major Milestone: sage-duplicate/invalid/wontfix
Component: symbolics Keywords:
Cc: Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Description (last modified by rws)

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)
/home/ralf/sage/local/lib/python2.7/site-packages/sympy-1.0-py2.7.egg/sympy/parsing/sympy_parser.pyc in flatten(self, args, func)
    922         result = []
    923         for arg in args:
--> 924             if isinstance(arg, ast.Call) and arg.func.id == func:
    925                 result.extend(self.flatten(arg.args, func))
    926             else:

AttributeError: 'Call' object has no attribute 'id'

which disappears when 3*u(n) is changed to u(n)*3 or u(n)

Reported as ​https://github.com/sympy/sympy/issues/10795

Change History (5)

comment:1 Changed 5 years ago by rws

  • Description modified (diff)

comment:2 Changed 5 years ago by rws

  • Description modified (diff)
  • Report Upstream changed from N/A to Reported upstream. No feedback yet.

comment:3 Changed 5 years ago by rws

  • Milestone changed from sage-7.2 to sage-duplicate/invalid/wontfix
  • Report Upstream changed from Reported upstream. No feedback yet. to N/A
  • Status changed from new to needs_review

This was resolved in #20185.

comment:4 Changed 5 years ago by rws

  • Status changed from needs_review to positive_review

comment:5 Changed 5 years ago by vbraun

  • Resolution set to fixed
  • Status changed from positive_review to closed
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