學過python語法的基礎，由此將由淺入深地進行以此python爬蟲的相關知識點的梳理

從網頁中爬取檔案並儲存至本地

import requests
import os
url = "http://image.nationalgeographic.com.cn/2017/0926/20170926103910736.jpg"
root = "C://Users//kfc//Desktop//pics//"
path = root + url.split('/')[-1]
try:
    if not os.path.exists(root):
        os.mkdir(root)
    if not os.path.exists(path):
        r = requests.get(url)
        with open(path,'wb') as f:
            f.write(r.content)
            f.close()
            print("檔案儲存成功")
    else:
        print("檔案已存在")
except:
    print("失敗")

 

python由淺入深2   繼續窺探python爬蟲的奧妙所在