CodeQL documentation

Module imports itself

ID: py/import-own-module
Kind: problem
Security severity: 
Severity: recommendation
Precision: very-high
   - maintainability
   - useless-code
Query suites:
   - python-security-and-quality.qls

Click to see the query in the CodeQL repository

There is no need for a module to import itself. A module importing itself may lead to errors as the module may be in an incomplete state when imported by itself.


Remove the import statement. Convert all expressions of the form where “mod” is the name of the current module to name.


In this example the module, ModuleImportsItself imports itself and has an expression referencing the module it is in as well.

import ModuleImportsItself

def factorial(n):
    if n <= 0:
        return 1
    return n * ModuleImportsItself.factorial(n - 1)

The import can be removed and the reference can be corrected.

def factorial(n):
    if n <= 0:
        return 1
    return n * factorial(n - 1)


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