Streaming & messaging
Kafka-style pub/sub, event consumers, async pipelines, and message-driven workflows.
Implement a FIFO Message Queue in Python with deque
This code implements a FIFO (first-in-first-out) message queue class using Python's collections.deque, providing enqueue, dequeue, peek, and size operations.
from collections import deque
class MessageQueue:
def __init__(self):
self.queue = deque()
def enqueue(self, message):
self.queue.append(message)
print(f"Enqueued: {message}")
def dequeue(self):
if self.is_empty():
print("Queue is empty, cannot dequeue.")
…Implement a retry queue with visibility timeout in Python
This code simulates a message queue with a visibility timeout, allowing messages to be retried if not deleted before the timeout expires.
import time
from collections import deque
class SimpleQueue:
def __init__(self, visibility_timeout=2):
self.queue = deque()
self.in_flight = {}
self.visibility_timeout = visibility_timeout
def send(self, message):
self.queue.append(message)
def receive(self):
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Streaming & messaging — Python code examples
What you will find here
This page collects streaming & messaging snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.
Samples vs tutorials and challenges
Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.