Rate Limits

def check_rate_limits(response):
    remaining = int(response.headers.get('X-RateLimit-Remaining', 0))
    reset_time = int(response.headers.get('X-RateLimit-Reset', 0))

    if remaining < 10:
        wait_time = reset_time - time.time()
        print(f"Warning: Only {remaining} requests left. Resets in {wait_time:.0f}s")

    return remaining > 0

import time
import random

def exponential_backoff(attempt, base_delay=1, max_delay=60):
    """Calculate delay with jitter for retry."""
    delay = min(base_delay * (2 ** attempt), max_delay)
    jitter = random.uniform(0, delay * 0.1)
    return delay + jitter

def request_with_backoff(func, max_retries=5):
    for attempt in range(max_retries):
        response = func()

        if response.status_code == 429:
            retry_after = response.headers.get('Retry-After')
            if retry_after:
                time.sleep(int(retry_after))
            else:
                time.sleep(exponential_backoff(attempt))
            continue

        return response

    raise Exception("Max retries exceeded")

import asyncio
from asyncio import Semaphore

class RateLimitedClient:
    def __init__(self, requests_per_second=10):
        self.semaphore = Semaphore(requests_per_second)
        self.delay = 1.0 / requests_per_second

    async def request(self, func):
        async with self.semaphore:
            result = await func()
            await asyncio.sleep(self.delay)
            return result

# Usage
client = RateLimitedClient(requests_per_second=10)
results = await asyncio.gather(*[
    client.request(lambda: upload_file(f))
    for f in files
])