def _identity(table, target_length):
    """Identity minimisation function."""
    if target_length is None or len(table) < target_length:
        return table
    raise MinimisationFailedError(target_length, len(table))
def _identity ( table , target_length ) : if target_length is None or len ( table ) < target_length : return table raise MinimisationFailedError ( target_length , len ( table ) )
Identity minimisation function.