useless-comparison (B015)

Derived from the flake8-bugbear linter.

What it does

Checks for useless comparisons.

Why is this bad?

Useless comparisons have no effect on the program, and are often included by mistake. If the comparison is intended to enforce an invariant, prepend the comparison with an assert. Otherwise, remove it entirely.

Example

foo == bar

Use instead:

assert foo == bar, "`foo` and `bar` should be equal."

References

• Python documentation: assert statement