rules:
- id: useless-eqeq
  patterns:
  - pattern-not-inside: |
      def __eq__(...):
          ...
  - pattern-not-inside: |
      def __cmp__(...):
          ...
  - pattern-not-inside: assert(...)
  - pattern-not-inside: assert ..., ...
  - pattern-not-inside: assertTrue(...)
  - pattern-not-inside: assertFalse(...)
  - pattern-either:
    - pattern: $X == $X
    - pattern: $X != $X
  - pattern-not: 1 == 1
  message: >-
    This expression is always True: `$X == $X` or `$X != $X`.
    If testing for floating point NaN, use `math.isnan($X)`,
    or `cmath.isnan($X)` if the number is complex.
  languages: [python]
  severity: ERROR
  metadata:
    category: correctness
    technology:
    - python