How to validate json with help of jsonschema?-CodePudding

I want to validate my json input -- my_json. I expected exception (because job1 is not job.

How to validate this json?

import json
from jsonschema import validate

# Describe what kind of json you expect.
schema = {
    "job" : {"type" : "string"},
    "big_list": [
    {
        "id": 1,
        "code": "qqq"
    },
    {
        "id": 2,
        "code": ""
    }
    # many items
    ]
}

# Convert json to python object.
my_json = {'job1': "as", 'big_list': [{'id': 1, 'code': 'qqq'}, {'id': 2, 'code': ''}]}
validate(instance=my_json, schema=schema) # I expected exception, but have no exceptions

CodePudding user response：

You did the test correctly but the schema is wrong. Schema should be like this. You can check the json schema docs here

import json
from jsonschema import validate

# Describe what kind of json you expect.
schema = {
    "type" : "object",
    "properties" : 
    {
        "job" : {"type" : "string"},
        "big_list" : {"type" : "object"},
     }
}

# Convert json to python object.
my_json = {'job1': "as", 'big_list': [{'id': 1, 'code': 'qqq'}, {'id': 2, 'code': ''}]}
valid_json = {'job1': "as", 'big_list': {'id': 1, 'code': 'qqq'}}
validate(instance=valid_json, schema=schema) # 
print('valid json has passed')
validate(instance=my_json, schema=schema) # this should raise an error