linux下python怎么写爬虫获取图片

跟linux有什么关系，python是跨平台的，爬取图片的代码如下：

import urllib.requestimport osimport randomdef url_open(url):

req=urllib.request.Request(url)    #为请求设置user-agent,使得程序看起来更像一个人类

req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.1WOW64rv:43.0) Gecko/20100101 Firefox/43.0')    #代理IP，使用户能以不同IP访问，从而防止被服务器发现

'''iplist=['1.193.162.123:8000','1.193.162.91:8000','1.193.163.32:8000']

proxy_support=urllib.request.ProxyHandler({'http':random.choice(iplist)})

opener=urllib.request.build_opener(proxy_support)

opener.addheaders=[('User-Agent','Mozilla/5.0 (Windows NT 6.1WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.154 Safari/537.36 LBBROWSER')]

urllib.request.install_opener(opener)'''

response=urllib.request.urlopen(req)

html=response.read()    return htmldef get_page(url):

html=url_open(url).decode('utf-8')

a=html.find('current-comment-page')+23

b=html.find(']',a)    #print(html[a:b])

return html[a:b]def find_imgs(url):

html=url_open(url).decode('utf-8')

img_addrs=[]

a=html.find('img src=')    while a!=-1:

b=html.find('.jpg',a,a+140)        if b!=-1:            if html[a+9]!='h':

img_addrs.append('http:'+html[a+9:b+4])            else:

img_addrs.append(html[a+9:b+4])        else:

b=a+9

a=html.find('img src=',b)    for each in img_addrs:

print(each+'我的打印')    return img_addrsdef save_imgs(folder,img_addrs):

for each in img_addrs:        #print('one was saved')

filename=each.split('/')[-1]        with open(filename,'wb') as f:

img=url_open(each)

f.write(img)def download_mm(folder='ooxx',pages=10):

os.mkdir(folder)

os.chdir(folder)

url=""

page_num=int(get_page(url))    for i in range(pages):

page_num=page_num-1

page_url=url+'page-'+str(page_num)+'#comments'

img_addrs=find_imgs(page_url)

save_imgs(folder,img_addrs)if __name__=='__main__':

download_mm()1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374

完成

运行结果

def download_poster_image(movie):   #定义一个下载图片函数

    src = movie  #取出它的url

    r = requests.get(src)   #去获取这个url

    fname = url.split('/')[-1]   #从url里面获取这个文件名

    with open(fname, 'wb') as f:  #应答的内容写进去并且使用二进制

        f.write(s.content)

    movie['poster-path'] = fname res = requests.get(url)

img_url = res.xpath('//img[@class="q-img-item"]/@src')

movie = img_url 

download_poster_image(movie) #执行函数

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