Validate JSON data using python

Question

I’m pretty new in python so would you be so kind to help me? It seems to be really trivial question. I need to create a function that validates incoming json data and return

Answer 1

I had the same problem and was dissatisfied with the existing solution of using jsonschema. It gives terrible error messages that are not at all user-friendly.

I wrote my own library to define schemas, which has a lot of additional functionality over jsonschema:

https://github.com/FlorianDietz/syntaxTrees

It gives very precise error messages, allows you to write code to customize the validation process, lets you define functions that operate on the validated JSON, and even creates HTML documentation for the schemas you define.

Schemas are defined as classes, similar to how Django defines models:

class MyExampleNode(syntaxTreesBasics.Node):
    field_1 = fields.Float(default=0)
    field_2 = fields.String()
    field_3 = fields.Value('my_example_node', null=True, default=None)
    class Meta:
        name = 'my_example_node'