方法一：

import re
import requests


# 获取二进制资源
def get_resource(url):
    headers = {
        "User-Agent": "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; 360SE)"
    }

    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        return response.content
    return None

# 获取页面
def get_page(url):
    headers =  {
        "User-Agent": "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; 360SE)"
    }
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        text = response.content.decode('utf-8')
        return text
    return None

def parse_source(html):
    # 正则匹配路由
    video = re.compile('data-mp4="(.*?)">', re.S)
    video = re.findall(video, html)
    for i in video:
        save_video(i)
        print(i + '下载完成')

    return video

def save_video(url):
    content = get_resource(url)
    filename = url.split("/")[-1]
    with open('./video/%s' % filename, 'wb') as f:
        f.write(content)


def main():
    for page in range(2, 10):
        url = "http://www.budejie.com/video/" + str(page)
        html = get_page(url)
        parse_source(html)


if __name__ == '__main__':
    main()