codeql/python/ql/src/Imports/CyclicImport.ql at codeql-cli/v2.19.1 · github/codeql · GitHub

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/**

* @name Cyclic import

* @description Module forms part of an import cycle, thereby indirectly importing itself.

* @kind problem

* @tags reliability

* maintainability

* modularity

* @problem.severity recommendation

* @sub-severity low

* @precision high

* @id py/cyclic-import

import python

import Cyclic

from ModuleValue m1, ModuleValue m2, Stmt imp

where

imp.getEnclosingModule() = m1.getScope() and

stmt_imports(imp) = m2 and

circular_import(m1, m2) and

m1 != m2 and

// this query finds all cyclic imports that are *not* flagged by ModuleLevelCyclicImport

not failing_import_due_to_cycle(m2, m1, _, _, _, _) and

not exists(If i | i.isNameEqMain() and i.contains(imp))

select imp, "Import of module $@ begins an import cycle.", m2, m2.getName()

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