學python沒多久，主要想用它來做爬蟲，寫api建議用node.js,做全站頁面渲染用php搞定，做爬蟲還得看python:

這裡沒有用python的一些爬蟲框架，先採用python內建模組urllib直接處理頁面抓取，然後解析內容然後直接下載圖片：

直接抓取豆瓣圖片api，解析並下載圖片:

# -*- coding: utf-8 -*-
import json
import urllib
import re
def getHtml(url):
     request =url
     response = urllib.urlopen(request)
     return response.read()

def downloadPic(url,start):
    source =getHtml(url)
    s = json.loads(source)
    imgArr = s['subjects']
    index=0
    for i in imgArr:
        #print i['title'],i['url']
        ext=re.findall(r'.*\.(\w+)$',i['cover'])
        if len(ext)>0:
            ext =ext[0]
        else:
            ext='jpg'
        path='./img/douban_%s_%s.%s' % (start,index,ext)
        print path
        f=open(path,'w')
        f.write(getHtml(i['cover']))
        f.close()
        index=index+1

def downMore(num=0):
    for i in range(num):
        p=i*20
        url='http://movie.douban.com/j/search_subjects?type=movie&tag=%E7%83%AD%E9%97%A8&sort=recommend&page_limit=20&page_start='+str(p)
        print 'url is %s' % url
        downloadPic(url,i)


downMore(13)
 

直接抓取豆瓣電影頁面原始碼解析並下載圖片：

# -*- coding: utf-8 -*-
import urllib
import re
def getHtml(url):
     request =url
     response = urllib.urlopen(request)
     return response.read()
 
def trimempty(n):
    return len(n)>12
url='http://movie.douban.com'
data= getHtml(url)
#print data
#imgs= re.findall(r'<a\s+.*href=\'([^\']*)\'\s+.*>.*<\/a>',data)
imgs= re.findall(r'<img\s+.*src=\"([^\"]*)\"\s+.*>',data)
if len(imgs)>50:
    imgs = imgs[0:50]
else:
    imgs=imgs

imgs = filter(trimempty,imgs)
print imgs
index=0
for i in imgs:
    extArr=re.findall(r'.*\.(\w+)$',i)
    if(len(extArr)>0):
        ext =extArr[0]
    else:
        ext='jpg'
    path ='./img/%s.%s' % (index,ext)
    print path
    f=open(path,'w')
    f.write(getHtml(i))
    f.close()
    index=index+1
    
 

執行程式碼前，先到當前目錄下新建img資料夾，執行程式碼大功告成！

小問題是windows下圖片顯示不正常，linux下完美下載，最後建議小夥伴們不要再windows上跑python了