"""
Version 1.1.0
Author lkk
Email [email protected]
date 2018-10-19 11:34
DESC 下載指定網頁的圖片到指定資料夾
"""
import requests
import os
from urllib import request
import re
res = request.urlopen("http://www.27270.com/beautiful/")
html = res.read()
with open("picture.html", 'wb') as f:
    f.write(html)
with open("picture.html", "rb") as f:
    msg = r'alt="(.*?)".*?src="(.*?)"'
    result = re.findall(msg, f.read().decode('gbk'))
    for i in result:
        url = ""
        root = "E:\my_test\day10_18\image/"
        path = root + i[0]+'.jpg'
        try:
            if not os.path.exists(root):
                os.mkdir(root)
                if os.path.exists(path):
                    r = requests.get(i[1])
                    # 如果傳送了一個錯誤請求(一個 4XX 客戶端錯誤，或者
                    # 5XX 伺服器錯誤響應)，我們可以通過Response.raise_for_status() 來丟擲異常：
                    r.raise_for_status()
                    # 使用with語句可以不用自己手動關閉已經開啟的檔案流
                    with open(path, "wb") as e:  # 開始寫檔案，wb代表寫二進位制檔案
                        e.write(r.content)
                    print("爬取完成")
            else:
                os.path.exists(path)
                r = requests.get(i[1])
                r.raise_for_status()
                # 使用with語句可以不用自己手動關閉已經開啟的檔案流
                with open(path, "wb") as e:  # 開始寫檔案，wb代表寫二進位制檔案
                    e.write(r.content)
                print("爬取完成")
        except Exception as e:
            print("爬取失敗:"+str(e))