<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def partial_schema(schema, filtered_fields):
 """ Validator for part of a schema, ignoring some fields :param schema: the Schema :param filtered_fields: fields to filter out """

    return Schema({
        k: v for k, v in schema.schema.items()
        if getattr(k, 'schema', k) not in filtered_fields
    }, extra=ALLOW_EXTRA)