Reference library

Streaming & messaging

Kafka-style pub/sub, event consumers, async pipelines, and message-driven workflows.

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Streaming & messaging easy

How to Build a Message Stream Queue in Python

A beginner-friendly MessageStream class built on deque that sends messages one at a time, tracks unread counts, and records sent items.

queue deque streaming
Python 
from collections import deque
import time


class MessageStream:
    def __init__(self, messages):
        self._queue = deque(messages)
        self._sent = []

    def send_next(self):
        if not self._queue:
            return None
        message = self._queue.popleft()
        self._sent.append(message)
     …
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