python多线程突破百度云限速下载

绝地灬酷狼 2022-04-18 01:56 460阅读 0赞

1、首先得用网页打开你自己的百度云

2、点开你所要下载文件的下载链接，如下图

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvdXJfYW5zd2Vy_size_16_color_FFFFFF_t_70][]

3、复制下载网址和文件名，自定义你想下载到的目录，填写到程序中

4、运行下列python程序

import requests
    import threading
    from time import time
    import json
    import re
    
    
    def downloadFile(URL, spos, epos, fp):
        try:
            header = {}
            header["Range"] = "bytes={}-{}".format(spos, epos)
            result = requests.get(URL, headers=header)
            fp.seek(spos)
            fp.write(result.content)
        except Exception:
            print(Exception)
    
    
    def split_file(file_size):
        start_p = []
        end_p = []
        per_size = int(file_size / thread_num)
        int_size = per_size * thread_num  # 整除部分
        for i in range(0, int_size, per_size):
            start_p.append(i)
            end_p.append(i + per_size - 1)
        if int_size < file_size:  # size 不一定 n 等分，将不能等分余下的部分添加到最后一个 sub 里
            end_p[-1] = file_size
        return start_p, end_p
    
    
    # 线程数量
    thread_num = 30
    
    # 需要填写的变量
    url='Your baiduPan download url'
    down_file_name = 'Your file name'
    # 如果该变量不填就会下载到运行程序的目录下
    address='D:/' #记得最后要加斜杠
    
    file = open(address+down_file_name, 'wb')
    res = requests.head(url)
    # 若有单引号替换成双引号
    json_data = re.sub('\'', '\"', str(res.headers))
    head_dict = json.loads(json_data)
    size = int(head_dict['Content-Length'])
    start_pos, end_pos = split_file(size)
    
    tmp = []
    print('start download...')
    t0 = time()
    for i in range(0, thread_num):
        t = threading.Thread(
            target=downloadFile,
            args=(
                url,
                start_pos[i],
                end_pos[i],
                file))
        t.setDaemon(True)  # 主进程结束时，线程也随之结束
        t.start()
        tmp.append(t)
    for i in tmp:
        i.join()
    
    file.close()
    t1 = time()
    total_time = t1 - t0
    speed = float(size) / (1000 * total_time)
    print('total_time:%.2f s' % total_time)
    print('speed:%.2f KB/s' % speed)

示例运行结果：

start download...
    total_time:12.57 s
    speed:484.72 KB/s

ps:学校网速慢2333

参考资料：[网址][Link 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvdXJfYW5zd2Vy_size_16_color_FFFFFF_t_70]: /images/20220418/6ff82aa27dcf4094aeb4b7f6c279c3c4.png
[Link 1]: https://www.xrkzn.cn/python-projects/python-project-multi-threads-download-baidu-cloud-files-in-high-speed/