python爬虫下载梨视频

import requests
import re
import os
from urllib.request import urlretrieve
def download_vedio():
    '''下载梨视频'''

    #获取页面源代码
    html = requests.get('https://www.pearvideo.com/category_8').text
    # print(html)


    # 获取视频ID      匹配所有
    reg= r''
    vedio_id = re.findall(reg,html)
    # print(vedio_id)


    #拼接URL地址
    vedio_url = []
    starturl = 'https://www.pearvideo.com/'
    for id in vedio_id:
        newurl = starturl+id
        vedio_url.append(newurl)

    # 获取完整url地址
    for playurl in vedio_url:
        #视频播放页的页面源代码
        html = requests.get(playurl).text
        # re匹配视频播放地址
        reg = r'srcUrl="(.*?)",vdoUrl=srcUrl'
        purl = re.findall(reg,html)
        # print(purl)
        reg = r'
(.*?)
'
        vedio_name = re.findall(reg,html)
        # print(vedio_name)
        print('正在下载视频:%s'%vedio_name[0])
        path = 'vedio'
        if path not in os.listdir():
            os.mkdir(path)

        filepath = path + '/%s.mp4'%vedio_name[0]
        urlretrieve(purl[0],filepath)

download_vedio()