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23 lines
765 B
Plaintext
23 lines
765 B
Plaintext
/**
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* @name Non-portable comparison using is when operands support __eq__
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* @description Comparison using 'is' when equivalence is not the same as identity and may not be portable.
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* @kind problem
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* @tags portability
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* maintainability
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* @problem.severity recommendation
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* @sub-severity low
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* @precision medium
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* @id py/comparison-using-is-non-portable
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*/
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import python
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import IsComparisons
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from Compare comp, Cmpop op, ClassObject c
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where invalid_portable_is_comparison(comp, op, c) and
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exists(Expr sub |
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sub = comp.getASubExpression() |
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cpython_interned_constant(sub) and
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not universally_interned_constant(sub)
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)
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select comp, "The result of this comparison with '" + op.getSymbol() + "' may differ between implementations of Python." |