CodeQL library for Python
codeql/python-all 0.11.9 (changelog, source)
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Predicate attributeClearStep

Holds if values stored inside attribute c are cleared at node n.

In obj.foo = x any old value stored in foo is cleared at the pre-update node associated with obj

Import path

import semmle.python.dataflow.new.internal.DataFlowPrivate
predicate attributeClearStep(Node n, AttributeContent c)