Retrieve all PED info from metadata

def get_ped_info(data, samples):
    """Retrieve all PED info from metadata
    """
    family_id = tz.get_in(["metadata", "family_id"], data, None)
    if not family_id:
        family_id = _find_shared_batch(samples)
    return {
        "gender": {"male": 1, "female": 2, "unknown": 0}.get(get_gender(data)),
        "individual_id": dd.get_sample_name(data),
        "family_id": family_id,
        "maternal_id": tz.get_in(["metadata", "maternal_id"], data, -9),
        "paternal_id": tz.get_in(["metadata", "paternal_id"], data, -9),
        "affected": get_affected_status(data),
        "ethnicity": tz.get_in(["metadata", "ethnicity"], data, -9)
    }