腾讯云盘下载有限速吗

import threading
import requests

def download_chunk(url, start, end, idx, temp_files):
    headers = {'Range': f'bytes={start}-{end}'}
    response = requests.get(url, headers=headers, stream=True)
    with open(f'temp_{idx}', 'wb') as f:
        for chunk in response.iter_content(chunk_size=8192):
            if chunk:
                f.write(chunk)

def multi_thread_download(url, num_threads=4):
    response = requests.head(url)
    file_size = int(response.headers['content-length'])
    chunk_size = file_size // num_threads
    threads = []
    temp_files = []

    for i in range(num_threads):
        start = i * chunk_size
        end = start + chunk_size - 1 if i < num_threads - 1 else file_size - 1
        t = threading.Thread(target=download_chunk, args=(url, start, end, i, temp_files))
        threads.append(t)
        t.start()

    for t in threads:
        t.join()

    with open('final_file', 'wb') as final_file:
        for i in range(num_threads):
            with open(f'temp_{i}', 'rb') as temp_file:
                final_file.write(temp_file.read())
            temp_file.close()
            # 删除临时文件
            os.remove(f'temp_{i}')

# 使用示例
multi_thread_download('http://example.com/file.zip')