rules:
- id: flask-class-method-get-side-effects
  patterns:
  - pattern-either:
    - pattern: |
        def get(self,...):
            ...
            $METHOD(...)
    - pattern: |
        def get(self,...):
            ...
            $VAR = $METHOD(...)
  - metavariable-regex:
      metavariable: $METHOD
      regex: (?i)(create|update|delete).*
  message: >-
    Flask class method GET with side effects
  severity: WARNING
  languages: [python]
  metadata:
    category: best-practice
    technology:
    - flask