CodeQL documentation

Use of an undefined placeholder variable

ID: py/undefined-placeholder-variable
Kind: problem
Severity: error
Precision: medium
Tags:
   - reliability
   - correctness
Query suites:
   - python-security-and-quality.qls

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This place-holder variable may not be defined. If this code is executed and the variable is undefined then a NameError will occur.

Recommendation

Check that the name of the place-holder variable is not a typographic error. If the name is correct, either define a value for the variable, or import the module that defines the function or method that sets the value.

If another module initializes this variable before it is used, then the NameError may not occur. However, you can make the code more robust and clearer by setting the variable to a default value in its own module.

References