[Solved] What is wrong with this code?from flask_restx import Api, Namespace, Resource api = Api() ns = Namespace('customers') @ns.route('/info') class CustomerInfo(Resource): def get(self):... | Flask

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What is wrong with this code?

from flask_restx import Api, Namespace, Resource

api = Api()
ns = Namespace('customers')

@ns.route('/info')
class CustomerInfo(Resource):
    def get(self):
        return {'customer': 'info'}

api.add_namespace(ns)

ANamespace variable is 'ns' but decorator uses '@ns.route' which is undefined

BNamespace 'ns' is not linked to any Flask app

CNamespace is not added to the Api instance

DResource class missing a constructor

Step-by-Step Solution

Solution:

Step 1: Check Api and app linkage
api = Api() has no Flask app, so Namespace routes can't be linked to a server.
Step 2: Verify other options
'ns' is correctly defined and used; Namespace is added to api.
Final Answer:
Namespace 'ns' is not linked to any Flask app -> Option B
Quick Check:
Missing Flask app linkage [OK]

Quick Trick: Link Api to Flask app using constructor or init_app [OK]

Common Mistakes:

MISTAKES

Not linking Api to Flask app
Mismatched variable names
Forgetting to add Namespace to Api

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What is wrong with this code?

Step 1: Check Api and app linkage

Step 2: Verify other options

Final Answer:

Quick Check:

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