CodeQL library for Python
codeql/python-all 0.10.5 ( changelog , source )

Member predicate SsaSourceVariable :: hasRefinementEdge

Holds if the edge pred->succ defines an ESSA variable for this variable in such a way that the new variable is a refinement in some way of the variable used at use.

predicate hasRefinementEdge ( ControlFlowNode use , BasicBlock pred , BasicBlock succ )