使用selenium加载时 延时好处

from selenium import webdriver
from pyquery import PyQuery as pq
import time

browser = webdriver.Chrome()


def zhua(play_url):
    try:
        browser.get(play_url)
        audio = browser.find_element_by_class_name('music')
        time.sleep(2)#注意这个slee()
        return (audio.get_attribute('src'))
    finally:
        print()


def top(home_url):
    doc = pq(home_url)
    li = doc('.pc_temp_songlist.pc_rank_songlist_short ul li a.pc_temp_songname')
    for url in li.items():
        print(url.attr.href, url.attr('title') + '-----' + zhua(url.attr.href))


if __name__ == '__main__':
    url = "http://www.kugou.com/yy/rank/home/1-6666.html?from=homepage"
    top(url)

在没有那个sleep()时输出是这样的：

http://www.kugou.com/song/me6rs87.html 陈奕迅 - 我们【后来的我们电影主题曲】-----http://www.kugou.com/song/me6rs87.html

http://www.kugou.com/song/mdgsi12.html 门丽 - 我在天涯海角等你-----http://fs.w.kugou.com/201804121211/ef97e4ecd0703c802597a1da0f3da8d9/G125/M00/1E/09/HYcBAFrLOgOARTi_ADQjHPep3GE221.mp3

http://www.kugou.com/song/2hols75.html 顾莉雅 - 南洋哥哥-----http://fs.w.kugou.com/201804121248/71e106a1417a5a9f0ed12d0649e97fb2/G013/M0A/06/19/rYYBAFULhrGAGrCcAD9eCeMqbXA706.mp3

http://www.kugou.com/song/mdftr4f.html 阿悄 - 老朋友-----http://fs.w.kugou.com/201804121228/17c8856f33b9e366677a4cd4b42ef14d/G127/M0B/13/00/vw0DAFrLKB2AWPYeADsZt39u7N8254.mp3

http://www.kugou.com/song/mdi9o8e.html 韩磊 - 公正之路-----http://www.kugou.com/song/mdi9o8e.html

http://www.kugou.com/song/mdafdc7.html L-Rex、陈艺之 - 冷战 (Remix)-----http://fs.w.kugou.com/201804121254/4bbd57a8314193a513941386dc4b6200/G132/M03/1B/13/ZJQEAFrKy_OAK5IkADVBfTKA55k724.mp3

http://www.kugou.com/song/3qkc33.html 李翊君、孟庭苇 - 红雨-----http://www.kugou.com/song/3qkc33.html

http://www.kugou.com/song/md7m46d.html 艾辰 - 离人愁-----http://fs.w.kugou.com/201804121258/524e174d8376e0d61acb34aab3fa1b3a/G133/M01/10/03/JYcBAFrMcGOAagz6ADkuisoBcuQ598.mp3

http://www.kugou.com/song/lwusg25.html BC221 - 解药-----http://fs.w.kugou.com/201804121305/4544bed0f155371b6e26107819320c93/G124/M0A/19/11/HIcBAFpq39CAaEUFACfan8K5N2A755.mp3

http://www.kugou.com/song/mdgk994.html TWICE - What is Love?-----http://fs.w.kugou.com/201804121210/68bd3c2b1443420d8ff907e3048b8f82/G123/M02/0C/03/W5QEAFrLMxSAI8USADLdVn5Bnfs366.mp3

http://www.kugou.com/song/md90u81.html 陈小硕 - 在没有你的很久以后-----http://www.kugou.com/song/md90u81.html

http://www.kugou.com/song/mcxb6e2.html 白鹿 - 江南恨【凤囚凰电视剧插曲】-----http://fs.w.kugou.com/201804121228/82a2d65f89c99b5e05b1ad0fdd991049/G134/M09/03/1F/xg0DAFrLDMuARmkHAEHA01qm0M4008.mp3

http://www.kugou.com/song/mctly98.html 成龙 - 物是人非-----http://fs.w.kugou.com/201804121234/d8b9924c00b3bc34680c1ccb1287e618/G131/M08/04/17/I4cBAFrEgvOAA8ehADZOxJpCi08388.mp3

http://www.kugou.com/song/mcmv8d1.html 烟把儿乐队 - 纸短情长 (完整版)-----http://www.kugou.com/song/mcmv8d1.html

http://www.kugou.com/song/md3c771.html Poo Bear、Justin Bieber、Jay Electronica - Hard 2 Face Real...-----http://fs.w.kugou.com/201804121310/1e67cc8e625199f16e7353cd43b22fdc/G130/M0B/14/1F/wg0DAFrHR0-AQ3U9ADACBriQo0E994.mp3

http://www.kugou.com/song/lx6a664.html 胡66 - 不必说抱歉-----http://www.kugou.com/song/lx6a664.html

http://www.kugou.com/song/lnt7ye6.html SEVEN TANG、盛哲 - 只为找到你-----http://fs.w.kugou.com/201804121302/b04980b905006b98f27284d84208f401/G126/M05/06/0D/vg0DAFpDEEqAa1yZADgbS37XuNs677.mp3

http://www.kugou.com/song/ehyizf4.html Jax Jones、RAYE - You Don't Know Me (Radio Edit)-----http://fs.w.kugou.com/201804121249/99dd8211d60cb2cdb6e05c5c4ca70b35/G083/M06/1F/0B/84YBAFhKi6uACNIVADRA1AT-nSQ359.mp3

http://www.kugou.com/song/hky494a.html 前男友 - 病变 (Remix)-----http://fs.w.kugou.com/201804121249/38ef566f9bb895d1988b51a762e540af/G113/M0A/03/1D/UZQEAFnxweKAS4HgADu1EdrXNZA198.mp3

http://www.kugou.com/song/gngg426.html 孙语赛 - 戒不掉-----http://fs.w.kugou.com/201804121223/ec9276cdf43ff5d9eec06adb3f7fdc97/G109/M03/01/00/rQ0DAFmkJKWAB5CXADhyyCQpsuw179.mp3

http://www.kugou.com/song/mb7tr84.html 刘辰希、曲肖冰 - 专属情歌-----http://www.kugou.com/song/mb7tr84.html

http://www.kugou.com/song/md5bd9a.html 金莎 - 今生等你一次回眸【远大前程电视剧插曲】-----http://fs.w.kugou.com/201804121217/fc3e5a950c57859a8b4da8925694e374/G129/M01/1C/19/YZQEAFrJd7OATCFEADR0vjb5Pm4777.mp3

Process finished with exit code 0


 可以看到有些歌曲资源并没有获取到,猜想应该是加载的问题，需要时间加载，在加入sleep()后，问题解决，每一个都获取到了相应资源位置。

输出：
http://www.kugou.com/song/me6rs87.html 陈奕迅 - 我们【后来的我们电影主题曲】-----http://fs.w.kugou.com/201804121259/0a2d0eeb3efef4ec52e11f35b28a7cc5/G132/M08/04/17/xA0DAFrMp6WAW1G3AD-0vqnx2mw603.mp3

http://www.kugou.com/song/mdgsi12.html 门丽 - 我在天涯海角等你-----http://fs.w.kugou.com/201804121228/aee9ac51e569f520ebfca1b59477d769/G125/M00/1E/09/HYcBAFrLOgOARTi_ADQjHPep3GE221.mp3

http://www.kugou.com/song/2hols75.html 顾莉雅 - 南洋哥哥-----http://fs.w.kugou.com/201804121248/71e106a1417a5a9f0ed12d0649e97fb2/G013/M0A/06/19/rYYBAFULhrGAGrCcAD9eCeMqbXA706.mp3

http://www.kugou.com/song/mdftr4f.html 阿悄 - 老朋友-----http://fs.w.kugou.com/201804121228/17c8856f33b9e366677a4cd4b42ef14d/G127/M0B/13/00/vw0DAFrLKB2AWPYeADsZt39u7N8254.mp3

http://www.kugou.com/song/mdi9o8e.html 韩磊 - 公正之路-----http://fs.w.kugou.com/201804121206/f942520c98e7f30c40bc5595afa17ca7/G131/M07/10/1D/Y5QEAFrLYY6ACcLBAEDyKN1O2fg382.mp3

http://www.kugou.com/song/mdafdc7.html L-Rex、陈艺之 - 冷战 (Remix)-----http://fs.w.kugou.com/201804121251/3d3f08f416c4c417e265a5bdcd0b688a/G132/M03/1B/13/ZJQEAFrKy_OAK5IkADVBfTKA55k724.mp3

http://www.kugou.com/song/3qkc33.html 李翊君、孟庭苇 - 红雨-----http://fs.w.kugou.com/201804121248/8188b406d2740c96b16db99dfcf96c46/G002/M00/0A/11/ooYBAFUAGMuAIn4MAF3bwVJlv-s159.mp3

http://www.kugou.com/song/md7m46d.html 艾辰 - 离人愁-----http://fs.w.kugou.com/201804121257/498f3041f4c8274dc85733c1f04b3838/G133/M01/10/03/JYcBAFrMcGOAagz6ADkuisoBcuQ598.mp3

http://www.kugou.com/song/lwusg25.html BC221 - 解药-----http://fs.w.kugou.com/201804121305/4544bed0f155371b6e26107819320c93/G124/M0A/19/11/HIcBAFpq39CAaEUFACfan8K5N2A755.mp3

http://www.kugou.com/song/mdgk994.html TWICE - What is Love?-----http://fs.w.kugou.com/201804121210/68bd3c2b1443420d8ff907e3048b8f82/G123/M02/0C/03/W5QEAFrLMxSAI8USADLdVn5Bnfs366.mp3

http://www.kugou.com/song/md90u81.html 陈小硕 - 在没有你的很久以后-----http://fs.w.kugou.com/201804121249/bd926bfc585cab1da5a99c0a7940def2/G133/M08/18/10/ZZQEAFrJ_y-AFaNRAE-a8iGRpl0164.mp3

http://www.kugou.com/song/mcxb6e2.html 白鹿 - 江南恨【凤囚凰电视剧插曲】-----http://fs.w.kugou.com/201804121249/c52a48b020942d935968f7e68f29681f/G134/M09/03/1F/xg0DAFrLDMuARmkHAEHA01qm0M4008.mp3

http://www.kugou.com/song/mctly98.html 成龙 - 物是人非-----http://fs.w.kugou.com/201804121234/d8b9924c00b3bc34680c1ccb1287e618/G131/M08/04/17/I4cBAFrEgvOAA8ehADZOxJpCi08388.mp3

http://www.kugou.com/song/mcmv8d1.html 烟把儿乐队 - 纸短情长 (完整版)-----http://fs.w.kugou.com/201804121303/97bfa108e091c4786741d1044f23a482/G108/M07/10/05/DIcBAFn3Ue6AH9e0AElKn_QQpN8672.mp3

http://www.kugou.com/song/md3c771.html Poo Bear、Justin Bieber、Jay Electronica - Hard 2 Face Real...-----http://fs.w.kugou.com/201804121230/a8c1b79c64b591155da14fa51705f2f3/G130/M0B/14/1F/wg0DAFrHR0-AQ3U9ADACBriQo0E994.mp3

http://www.kugou.com/song/lx6a664.html 胡66 - 不必说抱歉-----http://fs.w.kugou.com/201804121238/820f42afbaf36247fada57bb7f8bafbf/G128/M00/07/13/IIcBAFput0WASarsADtlr5oi1Ro550.mp3

http://www.kugou.com/song/lnt7ye6.html SEVEN TANG、盛哲 - 只为找到你-----http://fs.w.kugou.com/201804121302/b04980b905006b98f27284d84208f401/G126/M05/06/0D/vg0DAFpDEEqAa1yZADgbS37XuNs677.mp3

http://www.kugou.com/song/ehyizf4.html Jax Jones、RAYE - You Don't Know Me (Radio Edit)-----http://fs.w.kugou.com/201804121249/99dd8211d60cb2cdb6e05c5c4ca70b35/G083/M06/1F/0B/84YBAFhKi6uACNIVADRA1AT-nSQ359.mp3

http://www.kugou.com/song/hky494a.html 前男友 - 病变 (Remix)-----http://fs.w.kugou.com/201804121249/38ef566f9bb895d1988b51a762e540af/G113/M0A/03/1D/UZQEAFnxweKAS4HgADu1EdrXNZA198.mp3

http://www.kugou.com/song/gngg426.html 孙语赛 - 戒不掉-----http://fs.w.kugou.com/201804121254/4e8afe8689f09e4df7f3cb38be132f20/G109/M03/01/00/rQ0DAFmkJKWAB5CXADhyyCQpsuw179.mp3

http://www.kugou.com/song/mb7tr84.html 刘辰希、曲肖冰 - 专属情歌-----http://fs.w.kugou.com/201804121258/2cc04305cb87f527039dabef8a105925/G129/M03/08/00/YZQEAFq41fCAbSYCAEPjtFbNsLw869.mp3

http://www.kugou.com/song/md5bd9a.html 金莎 - 今生等你一次回眸【远大前程电视剧插曲】-----http://fs.w.kugou.com/201804121212/09c66195dc817333b9f5f02a9fd612ce/G129/M01/1C/19/YZQEAFrJd7OATCFEADR0vjb5Pm4777.mp3

Process finished with exit code 0