Method check

crates/vm/src/builtins/type.rs:557–559

Equivalent to CPython's PyType_Check macro Checks if obj is an instance of type (or its subclass)

(obj: &PyObject)

    /// Equivalent to CPython's PyType_Check macro
    /// Checks if obj is an instance of type (or its subclass)
    pub(crate) fn check(obj: &PyObject) -> Option<&Py<Self>> {
        obj.downcast_ref::<Self>()
    }

    fn resolve_mro(bases: &[PyRef<Self>]) -> Result<Vec<PyTypeRef>, String> {
        // Check for duplicates in bases.