Status: Accepted
Owner: [email protected]
Labels: Type-Defect Priority-Medium
New issue 2427 by [email protected]: use free_symbols, not atoms(Symbol)
http://code.google.com/p/sympy/issues/detail?id=2427
If any code wants to know if there are variables that are free like x but
not y in Integral(y, (y, 1, x)) then it should use expr.free_symbols,
not .atoms(Symbol) (since that would have given x and y for the example
given). The code should be checked for instances of .atoms(Symbol) to see
what the author intended and corrected if necessary.
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