import json

res = {}
with open('pay.json', 'r', encoding='utf8') as f:
    j = json.load(f)
    data = j['data']
    keys = [j['keys']] * len(data)
    for k_array, v_array in zip(keys, data):
        tmp = {}
        for k, v in zip(k_array, v_array):
            tmp[k] = v
        tmp['name'] = tmp['beizhu']
        tmp['unitPrice'] = tmp['unitprice']
        res[tmp['proid']] = tmp

with open('pay.json', 'w', encoding='utf8') as f:
    res = {'paycon': {'default': res}}
    json.dump(res, f)