有问题的Py代码

前几天在群里看到一个朋友说想抓取一个影视网站 把所有的资源弄下来 自己开一个玩玩 但是没有抓到关键数据 然后把网址发了出来 我上去分析了一番  然后使用python写了一个多线程的  但是因为视频文件太大 没有去测试下载很多  所以大家自己测试一下了  有什么问题 可以反馈一下
用到的第三方模块有 没有的朋友请自己下载一下
1 . requests
2. BeautifulSoup
3. lxml

首先第一步 获得整站所有的视频连接

第二步  是进入选择的电影的页面 去获得视频的链接

第三步 构造下载视频用到的参数

第四步 下载视频 保存到本地

直接上实现代码  
使用的多线程 加信号量实现  默认开启5条线程开始操作 每条线程去下载一套视频  是一套 一套 一套     
也可以自己去修改同时开启几条线程
实现代码

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import re
import requests
from threading import *
from bs4 import BeautifulSoup
from lxml import etree
from contextlib import closing

nMaxThread = 5
connectlock = BoundedSemaphore(nMaxThread)
gHeads = {
    "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36"}


class MovieThread(Thread):
    def __init__(self, url, movieName):
        Thread.__init__(self)
        self.url = url
        self.movieName = movieName

    def run(self):
        try:
            urlList = self.GetMovieUrl(self.url)
            for i in range(len(urlList)):
                type, vkey = self.GetVkeyParam(self.url, urlList[i])
                if type != None and vkey != None:
                    payload, DownloadUrl = self.GetOtherParam(self.url, urlList[i], type, vkey)
                    if DownloadUrl:
                        videoUrl = self.GetDownloadUrl(payload, DownloadUrl)
                        if videoUrl:
                            self.DownloadVideo(videoUrl, self.movieName, i + 1)
        finally:
            connectlock.release()

    def GetMovieUrl(self, url):
        heads = {
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
            "Host": "91mjw.com",
            "Referer": "https://91mjw.com/"
        }
        html = requests.get(url, headers=heads).text
        xmlContent = etree.HTML(html)
        UrlList = xmlContent.xpath("//div[@id='video_list_li']/a/@href")
        if len(UrlList) > 0:
            return UrlList
        else:
            return None

    def GetVkeyParam(self, firstUrl, secUrl):
        heads = {
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
            "Host": "91mjw.com",
            "Referer": firstUrl
        }
        try:
            html = requests.get(firstUrl + secUrl, headers=heads).text
            bs = BeautifulSoup(html, "html.parser")
            content = bs.find("body").find("script")
            reContent = re.findall('"(.*?)"', content.text)
            return reContent[0], reContent[1]
        except:
            return None, None

    def GetOtherParam(self, firstUrl, SecUrl, type, vKey):
        url = "https://api.1suplayer.me/player/?userID=&type=%s&vkey=%s" % (type, vKey)
        heads = {
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
            "Host": "api.1suplayer.me",
            "Referer": firstUrl + SecUrl
        }
        try:
            html = requests.get(url, headers=heads).text
            bs = BeautifulSoup(html, "html.parser")
            content = bs.find("body").find("script").text
            recontent = re.findall(" = '(.+?)'", content)
            payload = {
                "type": recontent[3],
                "vkey": recontent[4],
                "ckey": recontent[2],
                "userID": "",
                "userIP": recontent[0],
                "refres": 1,
                "my_url": recontent[1]
            }
            return payload, url
        except:
            return None, None

    def GetDownloadUrl(self, payload, refereUrl):
        heads = {
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
            "Host": "api.1suplayer.me",
            "Referer": refereUrl,
            "Origin": "https://api.1suplayer.me",
            "X-Requested-With": "XMLHttpRequest"
        }
        while True:
            retData = requests.post("https://api.1suplayer.me/player/api.php", data=payload, headers=heads).json()
            if retData["code"] == 200:
                return retData["url"]
            elif retData["code"] == 404:
                payload["refres"] += 1;
                continue
            else:
                return None

    def DownloadVideo(self, url, videoName, videoNum):
        CurrentSize = 0
        heads = {
            "chrome-proxy": "frfr",
            "User-Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36",
            "Host": "sh-yun-ftn.weiyun.com",
            "Range": "bytes=0-"
        }
        with closing(requests.get(url, headers=heads)) as response:
            retSize = int(response.headers['Content-Length'])
            chunkSize = 10240
            if response.status_code == 206:
                print
                '[File Size]: %0.2f MB
' % (retSize / 1024 / 1024)
                with open("./video/%s/%02d.mp4" % (videoName, videoNum), "wb") as f:
                    for data in response.iter_content(chunk_size=chunkSize):
                        f.write(data)
                        CurrentSize += len(data)
                        f.flush()
                        print
                        '[Progress]: %0.2f%%' % float(CurrentSize * 100 / retSize) + '
'


def main():
    html = requests.get("https://91mjw.com", headers=gHeads).text
    xmlcontent = etree.HTML(html)
    UrlList = xmlcontent.xpath("//div[@class='m-movies clearfix']/article/a/@href")
    NameList = xmlcontent.xpath("//div[@class='m-movies clearfix']/article/h2/a/text()")
    for i in range(len(UrlList)):
        connectlock.acquire()
        url = UrlList[i]
        name = NameList[i].encode("utf-8")
        t = MovieThread(url, name)
        t.start()


if __name__ == '__main__':
    main()