这是我第一次处理json数据。所以我对json的结构不太熟悉。
我通过“我们这些人”的电子请愿网站获得了一些数据，代码如下：
url = "https://api.whitehouse.gov/v1/petitions.json?limit=3&offset=0&createdBefore=1573862400"
jdata_2 = requests.get(url).json()
但是，我意识到这与...普通的json结构有所不同，因为在尝试用熊猫将其转换为excel文件时遇到了一些错误
df = pandas.read_json(jdata_2)
很显然，在使用pandas.read_json（）代码之前，我必须错过一些必须做的事情。 我已经搜索了答案，但是大多数问题是“如何将json数据转换为excel数据”，这需要json数据。就我而言，我从url中抓取了它，因此我认为可以将这些字符串转换为json数据，然后尝试将其也转换为excel数据。所以我也尝试使用json.dump（），但效果不佳。
我知道这一定是天真的问题。但是我不确定从哪里可以开始这个幼稚的问题。如果有人能指导我如何处理它，我将不胜感激。或链接我一些我也可以学习的参考资料。
谢谢您的帮助。
输入：
url = "https://api.whitehouse.gov/v1/petitions.json?limit=3&offset=0&createdBefore=1573862400"
pp = pprint.PrettyPrinter(indent=4)
pp.pprint(jdata_2)
输出：
{ 'metadata': { 'requestInfo': { 'apiVersion': 1,
'query': { 'body': None,
'createdAfter': None,
'createdAt': None,
'createdBefore': '1573862400',
'isPublic': 1,
'isSignable': None,
'limit': '3',
'mock': 0,
'offset': '0',
'petitionsDefaultLimit': '1000',
'publicThreshold': 149,
'responseId': None,
'signatureCount': None,
'signatureCountCeiling': None,
'signatureCountFloor': 0,
'signatureThreshold': None,
'signatureThresholdCeiling': None,
'signatureThresholdFloor': None,
'sortBy': 'DATE_REACHED_PUBLIC',
'sortOrder': 'ASC',
'status': None,
'title': None,
'url': None,
'websiteUrl': 'https://petitions.whitehouse.gov'},
'resource': 'petitions'},
'responseInfo': { 'developerMessage': 'OK',
'errorCode': '',
'moreInfo': '',
'status': 200,
'userMessage': ''},
'resultset': {'count': 1852, 'limit': 3, 'offset': 0}},
'results': [ { 'body': 'Please save kurdish people in syria \r\n'
'pleaee save north syria',
'created': 1570630389,
'deadline': 1573225989,
'id': '2798897',
'isPublic': True,
'isSignable': False,
'issues': [ { 'id': 326,
'name': 'Homeland Security & '
'Defense'}],
'petition_type': [ { 'id': 291,
'name': 'Call on Congress to '
'act on an issue'}],
'reachedPublic': 0,
'response': [],
'signatureCount': 149,
'signatureThreshold': 100000,
'signaturesNeeded': 99851,
'status': 'closed',
'title': 'Please save rojava north syria\r\n'
'please save kurdish people\r\n'
'please stop erdogan\r\n'
'plaease please',
'type': 'petition',
'url': 'https://petitions.whitehouse.gov/petition/please-save-rojava-north-syria-please-save-kurdish-people-please-stop-erdogan-plaease-please'},
{ 'body': 'Kane Friess was a 2 year old boy who was '
"murdered by his mom's boyfriend, Gyasi "
'Campbell. Even with expert statements from '
'forensic anthropologists, stating his injuries '
'wete the result of homicide. Mr. Campbell was '
'found guilty of involuntary manslaughter. This '
"is an outrage to Kane's Family and our "
'community.',
'created': 1566053365,
'deadline': 1568645365,
'id': '2782248',
'isPublic': True,
'isSignable': False,
'issues': [ { 'id': 321,
'name': 'Criminal Justice Reform'}],
'petition_type': [ { 'id': 281,
'name': 'Change an existing '
'Administration '
'policy'}],
'reachedPublic': 0,
'response': [],
'signatureCount': 149,
'signatureThreshold': 100000,
'signaturesNeeded': 99851,
'status': 'closed',
'title': "Kane's Law. Upon which the murder of a child, "
'regardless of circumstances, be seen as 1st '
'degree murder. A Federal Law.',
'type': 'petition',
'url': 'https://petitions.whitehouse.gov/petition/kanes-law-upon-which-murder-child-regardless-circumstances-be-seen-1st-degree-murder-federal-law'},
{ 'body': "Schumer and Pelosi's hatred and refusing to "
'work with President Donald J. Trump is holding '
'America hostage. We the people know securing '
'our southern border is a priority which will '
'not happen with these two in office. Lets '
'build the wall NOW!',
'created': 1547050064,
'deadline': 1549642064,
'id': '2722358',
'isPublic': True,
'isSignable': False,
'issues': [ {'id': 306, 'name': 'Budget & Taxes'},
{ 'id': 326,
'name': 'Homeland Security & '
'Defense'},
{'id': 29, 'name': 'Immigration'}],
'petition_type': [ { 'id': 291,
'name': 'Call on Congress to '
'act on an issue'}],
'reachedPublic': 0,
'response': [],
'signatureCount': 149,
'signatureThreshold': 100000,
'signaturesNeeded': 99851,
'status': 'closed',
'title': 'Remove Chuck Schumer and Nancy Pelosi from '
'office',
'type': 'petition',
'url': 'https://petitions.whitehouse.gov/petition/remove-chuck-schumer-and-nancy-pelosi-office'}]}
这是我收到的错误消息 输入：
df = pandas.read_json(jdata_2)
输出：
ValueError: Invalid file path or buffer object type: <class 'dict'>
答案 0 :(得分：1)
您也可以尝试下面的代码，它工作正常
URL = "https://api.whitehouse.gov/v1/petitions.json?limit=3&offset=0&createdBefore=1573862400"
// fetching the json response from the URL
req = requests.get(URL)
text_data= req.text
json_dict= json.loads(text_data)
//converting json dictionary to python dataframe for results object
df = pd.DataFrame.from_dict(json_dict["results"])
最后，将数据框保存为excel格式，即 xlsx
df.to_excel("output.xlsx")