def fillkeys(Recs):
    """
    reconciles keys of dictionaries within Recs.
    """
    keylist, OutRecs = [], []
    for rec in Recs:
        for key in list(rec.keys()):
            if key not in keylist:
                keylist.append(key)
    for rec in Recs:
        for key in keylist:
            if key not in list(rec.keys()):
                rec[key] = ''
        OutRecs.append(rec)
    return OutRecs, keylist
