[Solved] Identify the error in this Flask polling endpoint code: from flask import Flask, jsonify app = Flask(__name__) @app.route('/poll') def poll(): data = {'status': 'ok'} | Flask

Flask - WebSocket and Real-Time

Identify the error in this Flask polling endpoint code:

from flask import Flask, jsonify
app = Flask(__name__)

@app.route('/poll')
def poll():
    data = {'status': 'ok'}

AFunction poll() is missing a return statement

BMissing @app.route decorator

CFlask app is not created properly

DReturning a dict directly without using jsonify causes an error

Step-by-Step Solution

Solution:

Step 1: Check for return statement
The poll() function defines data but does not return it.
Step 2: Verify function completeness
Missing return statement means the endpoint returns None by default, causing unexpected empty response.
Final Answer:
Function poll() is missing a return statement -> Option A
Quick Check:
Missing return in view function [OK]

Quick Trick: Always include return statement in Flask route handlers [OK]

Common Mistakes:

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