python 通过链接下载网络视频，音乐等

方法一：

# -*- coding: utf-8 -*-

import requests

from contextlib import closing

import time

# url-需要下载的视频地址

# path-视频存放位置

def download_file(url, path):

    with closing(requests.get(url, stream=True)) as r:

        chunk_size = 1024

        content_size = int(r.headers['content-length'])

        print '下载开始'

        with open(path, "wb") as f:

            n = 1

            for chunk in r.iter_content(chunk_size=chunk_size):

                loaded = n*1024.0/content_size

                f.write(chunk)

                # print '已下载{0:%}'.format(loaded)

                n += 1

url = "http://media.cugbonline.cn/dest/cd7/cd7f62da-c976-4163-8494-630e430bb45a.mp4"

download_file(url, "F:\\LearnEng10.mp4")

方法二：

#! /usr/bin/env python

# -*- encoding: UTF-8 -*-

import sys,os

import urllib

def urlcallback(a,b,c):

    """

        call back function

        a,已下载的数据块

        b,数据块的大小

        c,远程文件的大小

    """

    print "callback"

    prec=100.0*a*b/c

    print "%.2f%%"%(prec,)

def main(argv):

    print "start..."

    # urllib.urlretrieve("https://96.f.1ting.com/5d28298b/f44703371f3a2beefee1f445d4202a69/2019/06/05X/05e_Youxiu/01.mp3","F:\\33.mp3",urlcallback)

    # urllib.urlretrieve("http://media.cugbonline.cn/dest/cd7/cd7f62da-c976-4163-8494-630e430bb45a.mp4","F:\\34.mp4")

    urllib.urlretrieve("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1563531213&di=6a58d83448f9023e9a522d7733c3553b&imgtype=jpg&er=1&src=http%3A%2F%2Fg.hiphotos.baidu.com%2Fzhidao%2Fpic%2Fitem%2F3ac79f3df8dcd1004cff01c8738b4710b8122ffc.jpg","F:\\34.jpg")

    print "end..."

if __name__=="__main__":

    main(sys.argv[1:])