Method try_mapping

crates/vm/src/protocol/mapping.rs:78–85

(&self, vm: &VirtualMachine)

    }

    pub fn try_mapping(&self, vm: &VirtualMachine) -> PyResult<PyMapping<'_>> {
        let mapping = self.mapping_unchecked();
        if mapping.check() {
            Ok(mapping)
        } else {
            Err(vm.new_type_error(format!("{} is not a mapping object", self.class())))
        }
    }
}

#[derive(Copy, Clone)]