我在一个文件中有这个JSON:
{
"maps": [
{
"id": "blabla",
"iscategorical": "0"
},
{
"id": "blabla",
"iscategorical": "0"
}
],
"masks": [
"id": "valore"
],
"om_points": "value",
"parameters": [
"id": "valore"
]
}
我编写了这个脚本来打印所有JSON数据:
import json
from pprint import pprint
with open('data.json') as f:
data = json.load(f)
pprint(data)
不过,此程序引发了一个异常:
Traceback (most recent call last):
File "<pyshell#1>", line 5, in <module>
data = json.load(f)
File "/usr/lib/python3.5/json/__init__.py", line 319, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.5/json/decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.5/json/decoder.py", line 355, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 13 column 13 (char 213)
如何解析JSON并提取其值?
最佳答案:
您的数据格式无效。当您应该有[]
时,您有{}
:[]
用于json数组,在python中称为list
{}
用于json对象,在python中称为dict
下面是JSON文件的外观:
{
"maps": [
{
"id": "blabla",
"iscategorical": "0"
},
{
"id": "blabla",
"iscategorical": "0"
}
],
"masks": {
"id": "valore"
},
"om_points": "value",
"parameters": {
"id": "valore"
}
}
然后您可以使用您的代码:
import json
from pprint import pprint
with open('data.json') as f:
data = json.load(f)
pprint(data)
通过数据,您现在还可以找到这样的值:
data["maps"][0]["id"]
data["masks"]["id"]
data["om_points"]
尝试一下,看看是否有意义。