将json数据读取到DataFrame中 [英] reading json data into DataFrame
本文介绍了将json数据读取到DataFrame中的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我遇到了一些json文件(从Twython/Tweeter API生成)的问题.
I'm having a problem with some json file (generated from Twython / Tweeter API).
文件如下:
[
{
"created_at": "Thu Mar 14 20:24:53 +0000 2019",
"id": 1106290123426140165,
"id_str": "1106290123426140165",
"text": "RT @ALABDULLATIF: n@B_Al3bdullatif \n\u278b\u2026",
"source": "<a href=\"http://twitter.com/download/android\"
rel=\"nofollow\">Twitter for Android</a>",
"truncated": false,
"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,
"in_reply_to_screen_name": null,
"user": {
"id": 1091414851400929286,
"id_str": "1091414851400929286",
"name": "u064a",
"screen_name": "UThbZ4nwsuzAMQm",
"location": null,
"url": null,
"description": null,
"translator_type": "none",
"protected": false,
"verified": false,
"followers_count": 0,
"friends_count": 0,
"listed_count": 0,
"favourites_count": 0,
"statuses_count": 2,
"created_at": "Fri Feb 01 19:15:52 +0000 2019",
"utc_offset": null,
"time_zone": null,
"geo_enabled": false,
"lang": "en",
"contributors_enabled": false,
"is_translator": false,
"profile_background_color": "F5F8FA",
ETC
当我尝试与此一起阅读时:
When I try to read it with this:
fname = "tweets_03.json"
text=[]
retweets=[]
language=[]
followers=[]
with open(fname, 'r') as f:
for line in f:
if not line.isspace():
tweet = json.loads(line)
text.append(tweet.get('text', ''))
retweets.append(tweet.get('retweet_count',''))
language.append(tweet.get('lang',''))
followers.append(tweet.get('followers_count',''))
text=pd.DataFrame(text)
text.columns=['text']
retweets=pd.DataFrame(retweets)
retweets.columns=['retweets']
language=pd.DataFrame(language)
language.columns=['language']
followers=pd.DataFrame(followers)
followers.columns=['followers']
df=pd.concat([text,retweets,language,followers],axis=1)
df.head(5)
我收到以下错误消息:
JSONDecodeError: Expecting value: line 2 column 1 (char 2)
我也尝试过:
data = "tweets_03.json"
jdata = json.loads(data)
df = pd.DataFrame(jdata)
这给了我以下错误:
JSONDecodeError: Expecting value: line 1 column 1 (char 0)
如果有人可以提供帮助，将不胜感激.我想将数据转换为数据框. 谢谢 祝福
If anyone could pse help it would be much appreciated. I'm wanting to convert the data into a dataframe. Thank you Best Wishes
推荐答案
问题是您的json文件实际上是将多个json文件分成1个.您需要将它们分开并加载以读取它们.
The issue is your json file is actually multiple json files into 1. You need to separate them and load read them in.
我这样做的方法是找到所有这些][实例并在这些实例上拆分.然后，只需遍历要加载的每个对象，然后将其转储到数据帧中即可.但是，由于其中嵌套了字典和列表，因此非常混乱.但这会为您生成一个数据框.
The way I did that was find all those ][ instances and split on those. Then just iterate through each of those to be loaded and then dumped into a dataframe. It is quite messy though as it's nested dictionaries and lists within there. But this will generate a dataframe for you.
import pandas as pd
import json
data = []
with open('tweets_03.json') as json_file:
data_str = json_file.read()
data_str = data_str.split('[',1)[-1]
data_str = data_str.rsplit(']',1)[0]
data_str = data_str.split('][')
for jsonStr in data_str:
jsonStr = '[' + jsonStr + ']'
temp_data = json.loads(jsonStr)
for each in temp_data:
data.append(each)
df = pd.DataFrame(data)
输出:
print (df)
contributors ... user
0 None ... {'id': 427643942, 'id_str': '427643942', 'name...
1 None ... {'id': 1063556070151528449, 'id_str': '1063556...
2 None ... {'id': 924769730606567424, 'id_str': '92476973...
3 None ... {'id': 287355962, 'id_str': '287355962', 'name...
4 None ... {'id': 2908153155, 'id_str': '2908153155', 'na...
5 None ... {'id': 1040181804026744832, 'id_str': '1040181...
6 None ... {'id': 397901665, 'id_str': '397901665', 'name...
7 None ... {'id': 14547327, 'id_str': '14547327', 'name':...
8 None ... {'id': 1159572698, 'id_str': '1159572698', 'na...
9 None ... {'id': 3025332991, 'id_str': '3025332991', 'na...
10 None ... {'id': 926921371065647104, 'id_str': '92692137...
11 None ... {'id': 428415680, 'id_str': '428415680', 'name...
12 None ... {'id': 1040967562442551301, 'id_str': '1040967...
13 None ... {'id': 984957304905744385, 'id_str': '98495730...
14 None ... {'id': 24174895, 'id_str': '24174895', 'name':...
15 None ... {'id': 543254812, 'id_str': '543254812', 'name...
16 None ... {'id': 377146136, 'id_str': '377146136', 'name...
17 None ... {'id': 63308004, 'id_str': '63308004', 'name':...
18 None ... {'id': 3039612566, 'id_str': '3039612566', 'na...
19 None ... {'id': 2902946418, 'id_str': '2902946418', 'na...
20 None ... {'id': 966776807830716416, 'id_str': '96677680...
21 None ... {'id': 1017086923507040256, 'id_str': '1017086...
22 None ... {'id': 888271500658081792, 'id_str': '88827150...
23 None ... {'id': 1085986810591932419, 'id_str': '1085986...
24 None ... {'id': 720061374999568384, 'id_str': '72006137...
25 None ... {'id': 21243436, 'id_str': '21243436', 'name':...
26 None ... {'id': 2849771796, 'id_str': '2849771796', 'na...
27 None ... {'id': 790823048744165376, 'id_str': '79082304...
28 None ... {'id': 881673927927496704, 'id_str': '88167392...
29 None ... {'id': 4344166641, 'id_str': '4344166641', 'na...
.. ... ... ...
942 None ... {'id': 306237570, 'id_str': '306237570', 'name...
943 None ... {'id': 883298986739748864, 'id_str': '88329898...
944 None ... {'id': 3027274443, 'id_str': '3027274443', 'na...
945 None ... {'id': 3189578162, 'id_str': '3189578162', 'na...
946 None ... {'id': 2327121601, 'id_str': '2327121601', 'na...
947 None ... {'id': 990411876, 'id_str': '990411876', 'name...
948 None ... {'id': 2995641808, 'id_str': '2995641808', 'na...
949 None ... {'id': 44540580, 'id_str': '44540580', 'name':...
950 None ... {'id': 47636922, 'id_str': '47636922', 'name':...
951 None ... {'id': 996052119433048064, 'id_str': '99605211...
952 None ... {'id': 806255305474641920, 'id_str': '80625530...
953 None ... {'id': 66738256, 'id_str': '66738256', 'name':...
954 None ... {'id': 1068149370229542912, 'id_str': '1068149...
955 None ... {'id': 229965328, 'id_str': '229965328', 'name...
956 None ... {'id': 1039247810410016769, 'id_str': '1039247...
957 None ... {'id': 4886141236, 'id_str': '4886141236', 'na...
958 None ... {'id': 892138074, 'id_str': '892138074', 'name...
959 None ... {'id': 134945640, 'id_str': '134945640', 'name...
960 None ... {'id': 300694818, 'id_str': '300694818', 'name...
961 None ... {'id': 840240258, 'id_str': '840240258', 'name...
962 None ... {'id': 265481826, 'id_str': '265481826', 'name...
963 None ... {'id': 1082113676344098816, 'id_str': '1082113...
964 None ... {'id': 229965328, 'id_str': '229965328', 'name...
965 None ... {'id': 4634960663, 'id_str': '4634960663', 'na...
966 None ... {'id': 161350829, 'id_str': '161350829', 'name...
967 None ... {'id': 1003363328641716225, 'id_str': '1003363...
968 None ... {'id': 898601924630597636, 'id_str': '89860192...
969 None ... {'id': 3285036854, 'id_str': '3285036854', 'na...
970 None ... {'id': 1099846021952294912, 'id_str': '1099846...
971 None ... {'id': 34326169, 'id_str': '34326169', 'name':...
[972 rows x 36 columns]
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