如何在Python中合并两个json文件？

我正在尝试使用python脚本合并2个json文件，例如：

第一个文件：test.json

[
  {
    "user_id": "273631610",
    "item_id": "0829482",
    "rating": "7"
  },
  {
    "user_id": "40688800",
    "item_id": "1343092",
    "rating": "8"
  },
  {
    "user_id": "395680865",
    "item_id": "1453405",
    "rating": "8"
  }
]

第二个文件：test_userz.json

[
{"contributors": null, "truncated": false, "text": "", "in_reply_to_status_id": null, "id": 421040281296052225, "favorite_count": 0, "source": "<a href=\"http://itunes.apple.com/us/app/imdb-movies-tv/id342792525?mt=8&uo=4\" rel=\"nofollow\">IMDb Movies & TV on iOS</a>", "retweeted": false, "coordinates": null, "entities": {"symbols": [], "user_mentions": [], "hashtags": [{"indices": [23, 28], "text": "IMDb"}], "urls": [{"url": "5E1fLOxB", "indices": [29, 51], "expanded_url": "http://www.imdb.com/title/tt0829482", "display_url": "imdb.com/title/tt0829482"}]}, "in_reply_to_screen_name": null, "id_str": "421040281296052225", "retweet_count": 0, "in_reply_to_user_id": null, "favorited": false, "user": {"follow_request_sent": false, "profile_use_background_image": true, "id": 273631610, "verified": false, "profile_text_color": "333333", "profile_image_url_https": "https://pbs.twimg.com/profile_images/378800000723050633/0fadb894b240dd426eb7b850dd8378d6_normal.jpeg", "profile_sidebar_fill_color": "DDEEF6", "is_translator": false, "geo_enabled": true, "entities": {"description": {"urls": []}}, "followers_count": 330, "protected": false, "location": "southend on sea", "default_profile_image": false, "id_str": "273631610", "lang": "en", "utc_offset": null, "statuses_count": 897, "description": "", "friends_count": 973, "profile_link_color": "0084B4", "profile_image_url": "http://pbs.twimg.com/profile_images/378800000723050633/0fadb894b240dd426eb7b850dd8378d6_normal.jpeg", "notifications": false, "profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme1/bg.png", "profile_background_color": "C0DEED", "profile_background_image_url": "http://abs.twimg.com/images/themes/theme1/bg.png", "name": "Ben Morris", "is_translation_enabled": false, "profile_background_tile": false, "favourites_count": 12, "screen_name": "benyere", "url": null, "created_at": "Mon Mar 28 21:31:52 +0000 2011", "contributors_enabled": false, "time_zone": null, "profile_sidebar_border_color": "C0DEED", "default_profile": true, "following": false, "listed_count": 0}, "geo": null, "in_reply_to_user_id_str": null, "possibly_sensitive": false, "lang": "en", "created_at": "Wed Jan 08 22:06:40 +0000 2014", "in_reply_to_status_id_str": null, "place": null},
{"contributors": null, "truncated": false, "text": "", "in_reply_to_status_id": null, "id": 421040870931320833, "favorite_count": 0, "source": "<a href=\"http://www.apple.com\" rel=\"nofollow\">iOS</a>", "retweeted": false, "coordinates": null, "entities": {"symbols": [], "user_mentions": [], "hashtags": [{"indices": [31, 36], "text": "IMDb"}], "urls": [{"url": "dTFeexXDk", "indices": [37, 59], "expanded_url": "http://www.imdb.com/title/tt1343092", "display_url": "imdb.com/title/tt1343092"}]}, "in_reply_to_screen_name": null, "id_str": "421040870931320833", "retweet_count": 0, "in_reply_to_user_id": null, "favorited": false, "user": {"follow_request_sent": false, "profile_use_background_image": false, "id": 40688800, "verified": false, "profile_text_color": "333333", "profile_image_url_https": "https://pbs.twimg.com/profile_images/378800000807375392/2ee9bbee70e09ac097f8415794877e7c_normal.jpeg", "profile_sidebar_fill_color": "FFFFFF", "is_translator": false, "geo_enabled": true, "entities": {"description": {"urls": []}}, "followers_count": 230, "protected": false, "location": "Alexandria", "default_profile_image": false, "id_str": "40688800", "lang": "en", "utc_offset": 7200, "statuses_count": 8914, "description": "#TedxAlexandriaU head. resp of #emshi_fe_7artak in #alex Day dreamer. #medstudent by accident. I speak sarcasm.", "friends_count": 722, "profile_link_color": "0099CC", "profile_image_url": "http://pbs.twimg.com/profile_images/378800000807375392/2ee9bbee70e09ac097f8415794877e7c_normal.jpeg", "notifications": false, "profile_background_image_url_https": "https://si0.twimg.com/profile_background_images/778453690/27087117198cdf1d18bb86a36140de62.jpeg", "profile_background_color": "FFF04D", "profile_banner_url": "https://pbs.twimg.com/profile_banners/40688800/1378766815", "profile_background_image_url": "http://a0.twimg.com/profile_background_images/778453690/27087117198cdf1d18bb86a36140de62.jpeg", "name": "NOUR", "is_translation_enabled": false, "profile_background_tile": true, "favourites_count": 324, "screen_name": "Nour_Ayman", "url": null, "created_at": "Sun May 17 16:38:59 +0000 2009", "contributors_enabled": false, "time_zone": "Cairo", "profile_sidebar_border_color": "FFFFFF", "default_profile": false, "following": false, "listed_count": 2}, "geo": null, "in_reply_to_user_id_str": null, "possibly_sensitive": false, "lang": "en", "created_at": "Wed Jan 08 22:09:00 +0000 2014", "in_reply_to_status_id_str": null, "place": null},
{"contributors": null, "truncated": false, "text": "", "in_reply_to_status_id": null, "id": 421041098287755264, "favorite_count": 0, "source": "<a href=\"http://www.apple.com\" rel=\"nofollow\">iOS</a>", "retweeted": false, "coordinates": null, "entities": {"symbols": [], "user_mentions": [], "hashtags": [{"indices": [34, 39], "text": "IMDb"}], "urls": [{"url": "I2HqieyDnn", "indices": [40, 62], "expanded_url": "http://www.imdb.com/title/tt1453405", "display_url": "imdb.com/title/tt1453405"}]}, "in_reply_to_screen_name": null, "id_str": "421041098287755264", "retweet_count": 0, "in_reply_to_user_id": null, "favorited": false, "user": {"follow_request_sent": false, "profile_use_background_image": true, "id": 395680865, "verified": false, "profile_text_color": "333333", "profile_image_url_https": "https://pbs.twimg.com/profile_images/3130997221/4a981c8594f3c9ec127542ae40bac4ce_normal.jpeg", "profile_sidebar_fill_color": "DDEEF6", "is_translator": false, "geo_enabled": false, "entities": {"description": {"urls": []}}, "followers_count": 9, "protected": false, "location": "Denmark", "default_profile_image": false, "id_str": "395680865", "lang": "en", "utc_offset": 3600, "statuses_count": 1557, "description": "On basketball, film and other really cool things.", "friends_count": 27, "profile_link_color": "0084B4", "profile_image_url": "http://pbs.twimg.com/profile_images/3130997221/4a981c8594f3c9ec127542ae40bac4ce_normal.jpeg", "notifications": false, "profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme1/bg.png", "profile_background_color": "C0DEED", "profile_background_image_url": "http://abs.twimg.com/images/themes/theme1/bg.png", "name": "Kristian Meller", "is_translation_enabled": false, "profile_background_tile": false, "favourites_count": 5, "screen_name": "kristianmeller", "url": null, "created_at": "Sat Oct 22 02:18:30 +0000 2011", "contributors_enabled": false, "time_zone": "Berlin", "profile_sidebar_border_color": "C0DEED", "default_profile": true, "following": false, "listed_count": 0}, "geo": null, "in_reply_to_user_id_str": null, "possibly_sensitive": false, "lang": "en", "created_at": "Wed Jan 08 22:09:55 +0000 2014", "in_reply_to_status_id_str": null, "place": null}
]

但在运行时，我看到以下错误：

Traceback (most recent call last):
File "json/merge2jsons.py", line 7, in <module>
data1.update(data2)
AttributeError: 'list' object has no attribute 'update'

回溯（最近一次呼叫最后一次）：
文件“json/merge2jsons.py”，第7行，在
数据1.更新（数据2）
AttributeError:“列表”对象没有属性“更新”

---

如何进行合并？

您面临的错误是，从文件加载时，您的

数据1

将成为一个

列表。您试图调用字典
update
，这是不正确的

要帮助提供错误示例，请查看以下内容：

>>> [].update('stuff')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'list' object has no attribute 'update'

如您所见，
update
方法存在，并且工作正常

因此，您要做的是迭代字典列表中的一个，并在此过程中进行更新。由于您确信您的数据是连续且长度相等的，因此可以通过以下方式简单地实现：

with open('f1.txt') as f1, open('f2.txt') as f2:
    first_list = json.load(f1)
    second_list = json.load(f2)

for i, v in enumerate(first_list):
    second_list[i].update(v)

因此，这里发生的事情是，通过使用
枚举
，您将拥有一个增量计数，表示列表的索引，以便轻松访问每个字典。这样，只需使用从
第一个列表的每次迭代中获得的词典更新
第二个列表中每个dict的词典，即可合并两个列表中相同索引的词典：

merged = [{**d1, **d2} for d1, d2 in zip(data1, data2)]

你将两者合并的标准是什么？您是否应该匹配它们之间的任何内容以确定哪些应该合并？您的代码与stacktrace不匹配。stacktrace在
data1.load（data2）
行中出错，该行在包含的代码示例中不存在。@jordanm已编辑，但未更新load@idjaw是的，这两个json是通过顺序相互关联的。您是否能够加载OP的
test_userz.json
？我将结构复制粘贴到文件中，没有问题。Thnx，尝试了一下，效果很好-我在字符串上使用了
load
，在io.StringIO上使用了
load
，但它都不喜欢，想想看。@wwii load and loads也让我措手不及。：）这是其中之一
>>> d = {'a': 1}
>>> d.update({'b': 2})
>>> d
{'b': 2, 'a': 1}

with open('f1.txt') as f1, open('f2.txt') as f2:
    first_list = json.load(f1)
    second_list = json.load(f2)

for i, v in enumerate(first_list):
    second_list[i].update(v)

merged = [{**d1, **d2} for d1, d2 in zip(data1, data2)]