[Solved] Given this code snippet, what will be the output sent to the room 'chatroom1'?... Given this code snippet, what will be the output sent to the room 'chatroom1'? | Flask

Flask - WebSocket and Real-Time

Given this code snippet, what will be the output sent to the room 'chatroom1'?

from flask_socketio import send, join_room

@socketio.on('join')
def on_join(data):
    room = data['room']
    join_room(room)
    send('User has entered the room.', room=room)

AAn error occurs because send() cannot specify a room

BThe message is sent to all connected clients regardless of room

CNo message is sent because join_room is missing

DThe message 'User has entered the room.' is sent to all clients in 'chatroom1'

Step-by-Step Solution

Solution:

Step 1: Analyze the join_room call
The user joins the specified room from data['room'], e.g., 'chatroom1'.
Step 2: Understand the send function with room parameter
send() with room=room sends the message only to clients in that room.
Final Answer:
The message 'User has entered the room.' is sent to all clients in 'chatroom1' -> Option D
Quick Check:
send(message, room=room) sends to that room [OK]

Quick Trick: send(message, room=room) targets that room only [OK]

Common Mistakes:

MISTAKES

Thinking send() sends to all clients always
Believing join_room is not called
Assuming send() cannot specify a room

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Given this code snippet, what will be the output sent to the room 'chatroom1'?

Step 1: Analyze the join_room call

Step 2: Understand the send function with room parameter

Final Answer:

Quick Check:

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