[Solved] Given the following Python code snippet using pika library, what will be the output or result?... Given the following Python code snippet using pika library, what will be the output or result? | RabbitMQ

RabbitMQ - Performance Tuning

Given the following Python code snippet using pika library, what will be the output or result?

channel.txSelect()
for i in range(3):
    channel.basic_publish(exchange='', routing_key='queue', body=f'Msg {i}')
channel.txCommit()
print('Batch sent')

AThree messages are sent together, then 'Batch sent' is printed.

BNo messages are sent because txCommit() is missing.

CAn error occurs because txSelect() is not valid in pika.

D'Batch sent' is printed but messages are sent one by one immediately.

Step-by-Step Solution

Solution:

Step 1: Understand transaction usage in code
txSelect() starts transaction, messages are published in loop, then txCommit() sends them all.
Step 2: Identify output and message sending behavior
Messages are sent together after commit, then 'Batch sent' prints.
Final Answer:
Three messages are sent together, then 'Batch sent' is printed. -> Option A
Quick Check:
txCommit() sends batch, then print [OK]

Quick Trick: txCommit() sends all messages at once after txSelect() [OK]

Common Mistakes:

MISTAKES

Thinking messages send immediately without commit
Assuming txSelect() is invalid in pika
Forgetting txCommit() means no send

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Given the following Python code snippet using pika library, what will be the output or result?

Step 1: Understand transaction usage in code

Step 2: Identify output and message sending behavior

Final Answer:

Quick Check:

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