import jsonimport csvjson_str = '[{"a":1,"b":"2","c":"3"},{"a":21,"c":"23","d":{"d1":"24"},"e":"25"}]'o = json.loads(json_str)def loop_data(o, k=''):    global json_ob, c_line    if isinstance(o, dict):        for key, value in o.items():            if (k == ''):                loop_data(value, key)            else:                loop_data(value, k + '.' + key)    elif isinstance(o, list):        for ov in o:            loop_data(ov, k)    else:        if k not in json_ob:            json_ob[k] = {}        json_ob[k][c_line] = odef get_title_rows(json_ob):    title = []    row_num = 0    rows = []    for key in json_ob:        title.append(key)        v = json_ob[key]        if len(v) > row_num:            row_num = len(v)        continue    for i in range(row_num):        row = {}        for k in json_ob:            v = json_ob[k]            if i in v.keys():                # 若有数据 ,则用填入表格                row[k] = v[i]            else:                # 若没有数据 ,则用空补位                row[k] = ''        rows.append(row)    return title, rowsdef write_csv(title, rows, csv_file_name):    # 输出文件名称  newline: 去掉csv中默认会写入空行的问题    with open(csv_file_name, 'w', newline='') as csv_file:        writer = csv.DictWriter(csv_file, fieldnames=title)        writer.writeheader()        writer.writerows(rows)def json_to_csv(object_list):    global json_ob, c_line    json_ob = {}    c_line = 0    for ov in object_list:        loop_data(ov)        c_line += 1    title, rows = get_title_rows(json_ob)    write_csv(title, rows, 'test.csv')json_to_csv(o)