Reference library

Python Code Samples

Medium snippets you can copy, study, and run in the browser editor.

4 matches
Comprehensions & generators medium

How to Build a Backpressure Generator Pause Producer Demo in Python

Demonstrates a producer–consumer pattern with a fixed-size buffer that pauses production when full, simulating backpressure.

backpressure producer-consumer deque
Python 
import time
import collections

def producer(buffer, max_size, items):
    """Adds items to the buffer until full, then pauses."""
    for item in items:
        while len(buffer) >= max_size:
            print(f"Buffer full ({len(buffer)}/{max_size}) — producer paused")
            time.sleep(0.1)
        buffer.appe…
14 0 Open
Data pipelines & processing medium

Implement an Out-of-Order Sort Buffer with a Heap in Python

Buffers out-of-order indices from a stream and emits them in sorted order using a min-heap with a sliding window.

heapq sorting streaming
Python 
import heapq
from collections import deque


class OutOfOrderSorter:
    def __init__(self, buffer_size):
        self.buffer_size = buffer_size
        self.buffer = deque(maxlen=buffer_size)
        self.heap = []
        self.next_expected_index = 0
        self.result = []

    def push(self, item):
        heapq.…
12 0 Open
Concurrency & performance medium

How to Use a Bounded Buffer with threading.Condition in Python

Implement a thread-safe bounded buffer using threading.Condition and show a producer–consumer example with exact output.

threading condition producer-consumer
Python 
import threading
import time
import random

class BoundedBuffer:
    def __init__(self, capacity):
        self.capacity = capacity
        self.buffer = []
        self.condition = threading.Condition()

    def put(self, item):
        with self.condition:
            while len(self.buffer) >= self.capacity:
       …
14 0 Open
Streaming & messaging medium

How to Implement Backpressure Pause Producer with a Bounded Queue in Python

Places a Producer thread that sends items into a bounded queue with backpressure: on Full, it pauses to let the consumer catch up.

queues backpressure threading
Python 
import threading
import time
import queue
import random


class Producer:
    def __init__(self, q):
        self.q = q
        self.running = True

    def produce(self):
        while self.running:
            item = random.randint(1, 100)
            try:
                self.q.put(item, timeout=0.5)
              …
14 0 Open

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