我正在尝试使用以下代码从json文件中提取名为text的特定字段属性。
python代码：
import json
jsonFile = open('search.json', 'r')
values = json.load(jsonFile)
jsonFile.close()
print(values['tweetdata']['retweeted_status']['text'])
JSON文件如下所示：
{"tweetdata":{
"contributors": null,
"coordinates": null,
"created_at": "Tue Jan 30 14:26:58 +0000 2018",
"entities": {
"hashtags": [],
"symbols": [],
"urls": [],
"user_mentions": [
{
"id": 29526123,
"id_str": "29526123",
"indices": [
3,
13
],
"name": "Siva #swachhbharat",
"screen_name": "muthushiv"
}
]
},
"favorite_count": 0,
"favorited": false,
"geo": null,
"id": 958345800127401984,
"id_str": "958345800127401984",
"in_reply_to_screen_name": null,
"in_reply_to_status_id": null,
"in_reply_to_status_id_str": null,
"in_reply_to_user_id": null,
"in_reply_to_user_id_str": null,
"is_quote_status": false,
"lang": "en",
"metadata": {
"iso_language_code": "en",
"result_type": "recent"
},
"place": null,
"retweet_count": 2,
"retweeted": false,
"retweeted_status": {
"contributors": null,
"coordinates": null,
"created_at": "Tue Jan 30 13:56:22 +0000 2018",
"entities": {
"hashtags": [],
"symbols": [],
"urls": [
{
"display_url": "twitter.com/i/web/status/9\u2026",
"expanded_url": "https://twitter.com/i/web/status/958338098605080577",
"indices": [
117,
140
],
"url": ""
}
],
"user_mentions": []
},
"favorite_count": 2,
"favorited": false,
"geo": null,
"id": 958338098605080577,
"id_str": "958338098605080577",
"in_reply_to_screen_name": null,
"in_reply_to_status_id": null,
"in_reply_to_status_id_str": null,
"in_reply_to_user_id": null,
"in_reply_to_user_id_str": null,
"is_quote_status": false,
"lang": "en",
"metadata": {
"iso_language_code": "en",
"result_type": "recent"
},
"place": null,
"possibly_sensitive": false,
"retweet_count": 2,
"retweeted": false,
"source": "<a href=\"http://twitter.com/download/android\" rel=\"nofollow\">Twitter for Android</a>",
"text": "Best way to erase a religion is by calling it a \"Heritage\". Jallikattu is not a religion, but a Heritage. Pongal is",
"truncated": true,
"user": {
"contributors_enabled": false,
"created_at": "Tue Apr 07 19:49:08 +0000 2009",
"default_profile": false,
"default_profile_image": false,
"description": "Inquisitive free man who loves life. \nRT is not an endorsement.\nI love everyone. My tweets r meant to question my own understanding!",
"entities": {
"description": {
"urls": []
}
},
"favourites_count": 18421,
"follow_request_sent": false,
"followers_count": 1239,
"following": false,
"friends_count": 1651,
"geo_enabled": false,
"has_extended_profile": false,
"id": 29526123,
"id_str": "29526123",
"is_translation_enabled": false,
"is_translator": false,
"lang": "en",
"listed_count": 17,
"location": "white plains, NY",
"name": "Siva #swachhbharat",
"notifications": false,
"profile_background_color": "BADFCD",
"profile_background_image_url": "http://abs.twimg.com/images/themes/theme12/bg.gif",
"profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme12/bg.gif",
"profile_background_tile": false,
"profile_banner_url": "https://pbs.twimg.com/profile_banners/29526123/1513447624",
"profile_image_url": "http://pbs.twimg.com/profile_images/942508100652814336/XAhEbLOf_normal.jpg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/942508100652814336/XAhEbLOf_normal.jpg",
"profile_link_color": "FF0000",
"profile_sidebar_border_color": "F2E195",
"profile_sidebar_fill_color": "FFF7CC",
"profile_text_color": "0C3E53",
"profile_use_background_image": true,
"protected": false,
"screen_name": "muthushiv",
"statuses_count": 22905,
"time_zone": "Europe/London",
"translator_type": "none",
"url": null,
"utc_offset": 0,
"verified": false
}
},
"source": "<a href=\"http://twitter.com\" rel=\"nofollow\">Twitter Web Client</a>",
"text": "RT @muthushiv: Best way to erase a religion is by calling it a \"Heritage\". Jallikattu is not a religion, but a Heritage. Pongal is not a re\u2026",
"truncated": false,
"user": {
"contributors_enabled": false,
"created_at": "Fri Jan 01 13:41:09 +0000 2016",
"default_profile": true,
"default_profile_image": false,
"description": "A Science Enthusiast. RTs not an Endorsement.",
"entities": {
"description": {
"urls": []
}
},
"favourites_count": 9395,
"follow_request_sent": false,
"followers_count": 596,
"following": false,
"friends_count": 196,
"geo_enabled": false,
"has_extended_profile": false,
"id": 4689495258,
"id_str": "4689495258",
"is_translation_enabled": false,
"is_translator": false,
"lang": "en",
"listed_count": 23,
"location": "",
"name": "\u0b86\u0ba9\u0bcd\u0bae\u0bc0\u0b95 \u0b85\u0bb0\u0b9a\u0bbf\u0baf\u0bb2\u0bcd\ud83c\uddee\ud83c\uddf3",
"notifications": false,
"profile_background_color": "F5F8FA",
"profile_background_image_url": null,
"profile_background_image_url_https": null,
"profile_background_tile": false,
"profile_image_url": "http://pbs.twimg.com/profile_images/928671220698038272/L6_sJ8KH_normal.jpg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/928671220698038272/L6_sJ8KH_normal.jpg",
"profile_link_color": "1DA1F2",
"profile_sidebar_border_color": "C0DEED",
"profile_sidebar_fill_color": "DDEEF6",
"profile_text_color": "333333",
"profile_use_background_image": true,
"protected": false,
"screen_name": "Mr_Mannagatti",
"statuses_count": 27802,
"time_zone": "Stockholm",
"translator_type": "none",
"url": null,
"utc_offset": 3600,
"verified": false
}}}
这样做时我得到正确的输出：
Best way to erase a religion is by calling it a "Heritage". Jallikattu is not a religion, but a Heritage. Pongal is…
但是当JSON文件中的属性tweetdata包含多个值时，exceution将失败。 示例JSON文件：
{
"contributors": null,
"coordinates": null,
"created_at": "Tue Jan 30 14:26:58 +0000 2018",
"entities": {
"hashtags": [],
"symbols": [],
"urls": [],
"user_mentions": [
{
"id": 29526123,
"id_str": "29526123",
"indices": [
3,
13
],
"name": "Siva #swachhbharat",
"screen_name": "muthushiv"
}
]
},
"favorite_count": 0,
"favorited": false,
"geo": null,
"id": 958345800127401984,
"id_str": "958345800127401984",
"in_reply_to_screen_name": null,
"in_reply_to_status_id": null,
"in_reply_to_status_id_str": null,
"in_reply_to_user_id": null,
"in_reply_to_user_id_str": null,
"is_quote_status": false,
"lang": "en",
"metadata": {
"iso_language_code": "en",
"result_type": "recent"
},
"place": null,
"retweet_count": 2,
"retweeted": false,
"retweeted_status": {
"contributors": null,
"coordinates": null,
"created_at": "Tue Jan 30 13:56:22 +0000 2018",
"entities": {
"hashtags": [],
"symbols": [],
"urls": [
{
"display_url": "twitter.com/i/web/status/9\u2026",
"expanded_url": "https://twitter.com/i/web/status/958338098605080577",
"indices": [
117,
140
],
"url": ""
}
],
"user_mentions": []
},
"favorite_count": 2,
"favorited": false,
"geo": null,
"id": 958338098605080577,
"id_str": "958338098605080577",
"in_reply_to_screen_name": null,
"in_reply_to_status_id": null,
"in_reply_to_status_id_str": null,
"in_reply_to_user_id": null,
"in_reply_to_user_id_str": null,
"is_quote_status": false,
"lang": "en",
"metadata": {
"iso_language_code": "en",
"result_type": "recent"
},
"place": null,
"possibly_sensitive": false,
"retweet_count": 2,
"retweeted": false,
"source": "<a href=\"http://twitter.com/download/android\" rel=\"nofollow\">Twitter for Android</a>",
"text": "Best way to erase a religion is by calling it a \"Heritage\". Jallikattu is not a religion, but a Heritage. Pongal is",
"truncated": true,
"user": {
"contributors_enabled": false,
"created_at": "Tue Apr 07 19:49:08 +0000 2009",
"default_profile": false,
"default_profile_image": false,
"description": "Inquisitive free man who loves life. \nRT is not an endorsement.\nI love everyone. My tweets r meant to question my own understanding!",
"entities": {
"description": {
"urls": []
}
},
"favourites_count": 18421,
"follow_request_sent": false,
"followers_count": 1239,
"following": false,
"friends_count": 1651,
"geo_enabled": false,
"has_extended_profile": false,
"id": 29526123,
"id_str": "29526123",
"is_translation_enabled": false,
"is_translator": false,
"lang": "en",
"listed_count": 17,
"location": "white plains, NY",
"name": "Siva #swachhbharat",
"notifications": false,
"profile_background_color": "BADFCD",
"profile_background_image_url": "http://abs.twimg.com/images/themes/theme12/bg.gif",
"profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme12/bg.gif",
"profile_background_tile": false,
"profile_banner_url": "https://pbs.twimg.com/profile_banners/29526123/1513447624",
"profile_image_url": "http://pbs.twimg.com/profile_images/942508100652814336/XAhEbLOf_normal.jpg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/942508100652814336/XAhEbLOf_normal.jpg",
"profile_link_color": "FF0000",
"profile_sidebar_border_color": "F2E195",
"profile_sidebar_fill_color": "FFF7CC",
"profile_text_color": "0C3E53",
"profile_use_background_image": true,
"protected": false,
"screen_name": "muthushiv",
"statuses_count": 22905,
"time_zone": "Europe/London",
"translator_type": "none",
"url": null,
"utc_offset": 0,
"verified": false
}
},
"source": "<a href=\"http://twitter.com\" rel=\"nofollow\">Twitter Web Client</a>",
"text": "RT @muthushiv: Best way to erase a religion is by calling it a \"Heritage\". Jallikattu is not a religion, but a Heritage. Pongal is not a re\u2026",
"truncated": false,
"user": {
"contributors_enabled": false,
"created_at": "Fri Jan 01 13:41:09 +0000 2016",
"default_profile": true,
"default_profile_image": false,
"description": "A Science Enthusiast. RTs not an Endorsement.",
"entities": {
"description": {
"urls": []
}
},
"favourites_count": 9395,
"follow_request_sent": false,
"followers_count": 596,
"following": false,
"friends_count": 196,
"geo_enabled": false,
"has_extended_profile": false,
"id": 4689495258,
"id_str": "4689495258",
"is_translation_enabled": false,
"is_translator": false,
"lang": "en",
"listed_count": 23,
"location": "",
"name": "\u0b86\u0ba9\u0bcd\u0bae\u0bc0\u0b95 \u0b85\u0bb0\u0b9a\u0bbf\u0baf\u0bb2\u0bcd\ud83c\uddee\ud83c\uddf3",
"notifications": false,
"profile_background_color": "F5F8FA",
"profile_background_image_url": null,
"profile_background_image_url_https": null,
"profile_background_tile": false,
"profile_image_url": "http://pbs.twimg.com/profile_images/928671220698038272/L6_sJ8KH_normal.jpg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/928671220698038272/L6_sJ8KH_normal.jpg",
"profile_link_color": "1DA1F2",
"profile_sidebar_border_color": "C0DEED",
"profile_sidebar_fill_color": "DDEEF6",
"profile_text_color": "333333",
"profile_use_background_image": true,
"protected": false,
"screen_name": "Mr_Mannagatti",
"statuses_count": 27802,
"time_zone": "Stockholm",
"translator_type": "none",
"url": null,
"utc_offset": 3600,
"verified": false
}},{
"contributors": null,
"coordinates": null,
"created_at": "Tue Jan 30 14:01:19 +0000 2018",
"entities": {
"hashtags": [],
"symbols": [],
"urls": [],
"user_mentions": [
{
"id": 29526123,
"id_str": "29526123",
"indices": [
3,
13
],
"name": "Siva #swachhbharat",
"screen_name": "muthushiv"
}
]
},
"favorite_count": 0,
"favorited": false,
"geo": null,
"id": 958339345219436544,
"id_str": "958339345219436544",
"in_reply_to_screen_name": null,
"in_reply_to_status_id": null,
"in_reply_to_status_id_str": null,
"in_reply_to_user_id": null,
"in_reply_to_user_id_str": null,
"is_quote_status": false,
"lang": "en",
"metadata": {
"iso_language_code": "en",
"result_type": "recent"
},
"place": null,
"retweet_count": 2,
"retweeted": false,
"retweeted_status": {
"contributors": null,
"coordinates": null,
"created_at": "Tue Jan 30 13:56:22 +0000 2018",
"entities": {
"hashtags": [],
"symbols": [],
"urls": [
{
"display_url": "twitter.com/i/web/status/9\u2026",
"expanded_url": "https://twitter.com/i/web/status/958338098605080577",
"indices": [
117,
140
],
"url": ""
}
],
"user_mentions": []
},
"favorite_count": 2,
"favorited": false,
"geo": null,
"id": 958338098605080577,
"id_str": "958338098605080577",
"in_reply_to_screen_name": null,
"in_reply_to_status_id": null,
"in_reply_to_status_id_str": null,
"in_reply_to_user_id": null,
"in_reply_to_user_id_str": null,
"is_quote_status": false,
"lang": "en",
"metadata": {
"iso_language_code": "en",
"result_type": "recent"
},
"place": null,
"possibly_sensitive": false,
"retweet_count": 2,
"retweeted": false,
"source": "<a href=\"http://twitter.com/download/android\" rel=\"nofollow\">Twitter for Android</a>",
"text": "Best way to erase a religion is by calling it a \"Heritage\". Jallikattu is not a religion, but a Heritage. Pongal is",
"truncated": true,
"user": {
"contributors_enabled": false,
"created_at": "Tue Apr 07 19:49:08 +0000 2009",
"default_profile": false,
"default_profile_image": false,
"description": "Inquisitive free man who loves life. \nRT is not an endorsement.\nI love everyone. My tweets r meant to question my own understanding!",
"entities": {
"description": {
"urls": []
}
},
"favourites_count": 18421,
"follow_request_sent": false,
"followers_count": 1239,
"following": false,
"friends_count": 1651,
"geo_enabled": false,
"has_extended_profile": false,
"id": 29526123,
"id_str": "29526123",
"is_translation_enabled": false,
"is_translator": false,
"lang": "en",
"listed_count": 17,
"location": "white plains, NY",
"name": "Siva #swachhbharat",
"notifications": false,
"profile_background_color": "BADFCD",
"profile_background_image_url": "http://abs.twimg.com/images/themes/theme12/bg.gif",
"profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme12/bg.gif",
"profile_background_tile": false,
"profile_banner_url": "https://pbs.twimg.com/profile_banners/29526123/1513447624",
"profile_image_url": "http://pbs.twimg.com/profile_images/942508100652814336/XAhEbLOf_normal.jpg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/942508100652814336/XAhEbLOf_normal.jpg",
"profile_link_color": "FF0000",
"profile_sidebar_border_color": "F2E195",
"profile_sidebar_fill_color": "FFF7CC",
"profile_text_color": "0C3E53",
"profile_use_background_image": true,
"protected": false,
"screen_name": "muthushiv",
"statuses_count": 22905,
"time_zone": "Europe/London",
"translator_type": "none",
"url": null,
"utc_offset": 0,
"verified": false
}
},
"source": "<a href=\"http://twitter.com/download/android\" rel=\"nofollow\">Twitter for Android</a>",
"text": "RT @muthushiv: Best way to erase a religion is by calling it a \"Heritage\". Jallikattu is not a religion, but a Heritage. Pongal is not a ",
"truncated": false,
"user": {
"contributors_enabled": false,
"created_at": "Wed Jul 08 05:02:36 +0000 2009",
"default_profile": true,
"default_profile_image": false,
"description": "For the protection of the righteous, for the destruction of wicked, and for the establishment of Dharma, I am born in every age. \u0b95\u0bbf\u0bb0\u0bc1\u0bb7\u0bcd\u0ba3\u0bbe\u0bb0\u0bcd\u0baa\u0bcd\u0baa\u0ba3\u0bae\u0bcd.",
"entities": {
"description": {
"urls": []
}
},
"favourites_count": 3633,
"follow_request_sent": false,
"followers_count": 79,
"following": false,
"friends_count": 138,
"geo_enabled": false,
"has_extended_profile": false,
"id": 54804923,
"id_str": "54804923",
"is_translation_enabled": false,
"is_translator": false,
"lang": "en",
"listed_count": 0,
"location": "",
"name": "Sai Sakthi",
"notifications": false,
"profile_background_color": "C0DEED",
"profile_background_image_url": "http://abs.twimg.com/images/themes/theme1/bg.png",
"profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme1/bg.png",
"profile_background_tile": false,
"profile_image_url": "http://pbs.twimg.com/profile_images/952740575924514816/ef9fWKQz_normal.jpg",
"profile_image_url_https": "https://pbs.twimg.com/profile_images/952740575924514816/ef9fWKQz_normal.jpg",
"profile_link_color": "1DA1F2",
"profile_sidebar_border_color": "C0DEED",
"profile_sidebar_fill_color": "DDEEF6",
"profile_text_color": "333333",
"profile_use_background_image": true,
"protected": false,
"screen_name": "RishyaShringar",
"statuses_count": 1250,
"time_zone": "New Delhi",
"translator_type": "none",
"url": null,
"utc_offset": 19800,
"verified": false
}},
代码失败，错误显示为
Traceback (most recent call last):
File "C:\Users\SJ\Desktop\New folder\parse.py", line 3, in <module>
values = json.load(jsonFile)
File "E:\Program files\python\lib\json\__init__.py", line 291, in load
**kw)
File "E:\Program files\python\lib\json\__init__.py", line 339, in loads
return _default_decoder.decode(s)
File "E:\Program files\python\lib\json\decoder.py", line 364, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "E:\Program files\python\lib\json\decoder.py", line 382, in
raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
可以理解如何解决这个问题。
答案 0 :(得分：0)
看起来你有一个tweetdata列表。像。的东西。
{"tweetdata" :[{
"contributors": null,
"coordinates": null,
"created_at": "Tue Jan 30 14:26:58 +0000 2018",
"entities": {
"hashtags": [],
"symbols": [],
"urls": [],
"user_mentions": [
{
"id": 29526123,
"id_str": "29526123",
"indices": [
3,
13
],
"name": "Siva #swachhbharat",
"screen_name": "muthushiv"
}
]
},
"favorite_count": 0,
"favorited": false,
"geo": null,
"id": 958345800127401984,
"id_str": "958345800127401984",
"in_reply_to_screen_name": null,
"in_reply_to_status_id": null,
"in_reply_to_status_id_str": null,
"in_reply_to_user_id": null,
"in_reply_to_user_id_str": null,
"is_quote_status": false,
"lang": "en",
"metadata": {
"iso_language_code": "en",
"result_type": "recent"
},
"place": null,
"retweet_count": 2,
"retweeted": false,
"retweeted_status": {
"contributors": null,
"coordinates": null,
"created_at": "Tue Jan 30 13:56:22 +0000 2018",
"entities": {
"hashtags": [],
"symbols": [],
"urls": [
{
"display_url": "twitter.com/i/web/status/9\u2026",
"expanded_url": "https://twitter.com/i/web/status/958338098605080577",
"indices": [
117,
140
],
"url": ""
}
],
"user_mentions": []
},
"favorite_count": 2,
"favorited": false,
"geo": null,
"id": 958338098605080577,
"id_str": "958338098605080577",
"in_reply_to_screen_name": null,
"in_reply_to_status_id": null,
"in_reply_to_status_id_str": null,
"in_reply_to_user_id": null,
"in_reply_to_user_id_str": null,
"is_quote_status": false,
"lang": "en",
"metadata": {
"iso_language_code": "en",
"result_type": "recent"
},
"place": null,
"possibly_sensitive": false,
"retweet_count": 2,
"retweeted": false,
"source": "<a href=\"http://twitter.com/download/android\" rel=\"nofollow\">Twitter for Android</a>",
"text": "Best way to erase a religion is by calling it a \"Heritage\". Jallikattu is not a religion, but a Heritage. Pongal is",
"truncated": true,
"user": {
"contributors_enabled": false,
"created_at": "Tue Apr 07 19:49:08 +0000 2009",
"default_profile": false,
"default_profile_image": false,
"description": "Inquisitive free man who loves life. \nRT is not an endorsement.\nI love everyone. My tweets r meant to question my own understanding!",
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您需要遍历列表以获取所需数据。
示例：
import json
path = "Path_to.json"
values = json.load(open(path, 'r'))
for value in values['tweetdata']:
print(value['retweeted_status']['text'])
<强>输出：
Best way to erase a religion is by calling it a "Heritage". Jallikattu is not a religion, but a Heritage. Pongal is
Best way to erase a religion is by calling it a "Heritage". Jallikattu is not a religion, but a Heritage. Pongal is