[Solved] Given this Python snippet, what will be the output if the publish call succeeds?from google.cloud import pubsub_v1 publisher = pubsub_v1.... | GCP

GCP - Cloud Pub/Sub

Given this Python snippet, what will be the output if the publish call succeeds?

from google.cloud import pubsub_v1
publisher = pubsub_v1.PublisherClient()
topic_path = 'projects/my-project/topics/my-topic'
future = publisher.publish(topic_path, b'Hello')
print(future.result())

AThe original message content 'Hello'

BThe message ID string of the published message

CAn error message about missing credentials

DNone, because publish() returns nothing

Step-by-Step Solution

Solution:

Step 1: Understand what publish() returns
publish() returns a Future object representing the asynchronous publish operation.
Step 2: Calling future.result() waits and returns the message ID
When the publish completes, future.result() returns the message ID string.
Final Answer:
The message ID string of the published message -> Option B
Quick Check:
future.result() = message ID string [OK]

Quick Trick: future.result() returns message ID after publish [OK]

Common Mistakes:

Expecting original message content
Assuming publish returns None
Ignoring asynchronous nature

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More GCP Quizzes

Given this Python snippet, what will be the output if the publish call succeeds?

Step 1: Understand what publish() returns

Step 2: Calling future.result() waits and returns the message ID

Final Answer:

Quick Check:

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