Validate JSON using Python

Python has built-in JSON module to work with JSON data. Python is getting popular and becoming the first choice of startup development. JSON is used widely because it easy to understand, compact and built in support in JavaScript.

Validating JSON Using Python.

json.loads() method is used to validate JSON data.

Here is the function which will validate JSON data.

#JSON Validator function
import json

def json_validator(data):
    try:
        json.loads(data)
        return True
    except ValueError as error:
        print("invalid json: %s" % error)
        return False

json.loads()

json.loads() loads the JSON data to parse, it will return true or it will fail and raised the exception. This function will work as EAFP (Easier to ask for forgiveness than permission). EAFP is python’s ideology to handle this kind of situation.

Here is the Example of Validating JSON data using Python.

#Validating JSON using Phython Code
import json

def json_validator(data):
    try:
        json.loads(data)
        return True
    except ValueError as error:
        print("invalid json: %s" % error)
        return False
    

#Valid JSON Data
""" {
  "actors": {
    "actor": [
      {
        "id": "1",
        "firstName": "Tom",
        "lastName": "Cruise"
      }
    ]
  }
}
"""

#Invalid JSON Data
"""
 {
    {
    "actor": [
      {
        "id": "1",
        "firstName": "Tom",
        "lastName": "Cruise"
      }
    ]
  }
}
 """


print(json_validator('{"actors":{"actor":[{"id":"1","firstName":"Tom","lastName":"Cruise"}]}}' ))#prints True

print (json_validator('{{"actor":[{"id":"1","firstName":"Tom","lastName":"Cruise"}]}}')) #prints Error message and False

#End

These ready-made tools can be used to validate JSON data online JSON Validator on CodeBeautify. and Json Validator.