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• 编写爬虫获取英雄联盟所有英雄的全部皮肤

• 需要库：
  - requests
  - re
  - json
  - os

• 效果：在该代码文件目录下生成n个Hero文件夹保存皮肤图片。

"""Date: 2019.11.7Author: JustlovesmileLanguage: python3"""import requestsimport reimport jsonimport osdef getHtml(url):    try:        r=requests.get(url)        r.raise_for_status()        r.encoding=r.apparent_encoding    except:        print(url+"爬取失败！")    else:        response = r.text        getInfo(response)def getInfo(res):    lists=re.findall(r'"keys":(.*?),"data"',res)    #print(lists)    hero_id=json.loads(lists[0])    #print(hero_id)    for hero in hero_id.values():        getSkin(hero)def getSkin(hero):    url='https://lol.qq.com/biz/hero/'+hero+'.js'    try:        r=requests.get(url)        r.raise_for_status()        r.encoding=r.apparent_encoding    except:        print(url+"爬取失败！")    else:        html=r.text        num=re.findall(r'"id":"(\d{4,6})","num"',html)        for i in range(len(num)):            img_url='https://game.gtimg.cn/images/lol/act/img/skin/big' + num[i] + '.jpg'            save_img(hero,img_url)def save_img(hero,img_url):    root=hero+"\\"    path=root+img_url.split('/')[-1]    try:        if not os.path.exists(root):            os.mkdir(root)        if not os.path.exists(path):            r=requests.get(img_url)            with open(path,'wb') as f:                f.write(r.content)                f.close()                print("文件保存成功！")        else:            print("文件已存在！")    except:        print("爬取失败！")    print(img_url+"已下载")def main():    url="https://lol.qq.com/biz/hero/champion.js"    getHtml(url)if __name__ == "__main__":    main()

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