我有一堆来自 Facebook 帖子的 JSON 数据,如下所示:
{"from": {"id": "8", "name": "Mary Pinter"}, "message": "How ARE you?", "comments": {"count": 0}, "updated_time": "2012-05-01", "created_time": "2012-05-01", "to": {"data": [{"id": "1543", "name": "Honey Pinter"}]}, "type": "status", "id": "id_7"}
JSON 数据是半结构化的,而且都不相同。 以下是我的代码:
import json
str = '{"from": {"id": "8", "name": "Mary Pinter"}, "message": "How ARE you?", "comments": {"count": 0}, "updated_time": "2012-05-01", "created_time": "2012-05-01", "to": {"data": [{"id": "1543", "name": "Honey Pinter"}]}, "type": "status", "id": "id_7"}'
data = json.loads(str)
post_id = data['id']
post_type = data['type']
print(post_id)
print(post_type)
created_time = data['created_time']
updated_time = data['updated_time']
print(created_time)
print(updated_time)
if data.get('application'):
app_id = data['application'].get('id', 0)
print(app_id)
else:
print('null')
#if data.get('to'):
#... This is the part I am not sure how to do
# Since it is in the form "to": {"data":[{"id":...}]}
我希望代码将 to_id 打印为 1543 else print 'null'
我不知道该怎么做。
最佳答案
import json
jsonData = """{"from": {"id": "8", "name": "Mary Pinter"}, "message": "How ARE you?", "comments": {"count": 0}, "updated_time": "2012-05-01", "created_time": "2012-05-01", "to": {"data": [{"id": "1543", "name": "Honey Pinter"}]}, "type": "status", "id": "id_7"}"""
def getTargetIds(jsonData):
data = json.loads(jsonData)
if 'to' not in data:
raise ValueError("No target in given data")
if 'data' not in data['to']:
raise ValueError("No data for target")
for dest in data['to']['data']:
if 'id' not in dest:
continue
targetId = dest['id']
print("to_id:", targetId)
输出:
In [9]: getTargetIds(s)
to_id: 1543
关于python - 检查键是否存在并使用 Python 迭代 JSON 数组,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24898797/