(Python)尝试从网站中隔离一些数据
(Python)尝试从网站中隔离一些数据
提问于 2014-02-03 08:48:00
基本上，该脚本将从wallbase.cc的随机页面和toplist页面下载图像。本质上，它查找一个7位数的字符串，该字符串将每个图像标识为该图像。它将该id输入到url中并下载它。我唯一的问题似乎是隔离7位数的字符串。
我想要做的是..
搜索<div id="thumbxxxxxxx"，然后将xxxxxxx赋值给变量。
这是我到目前为止所掌握的。
import urllib
import os
import sys
import re
#Written in Python 2.7 with LightTable
def get_id():
import urllib.request
req = urllib.request.Request('http://wallbase.cc/'+initial_prompt)
response = urllib.request.urlopen(req)
the_page = response.read()
for "data-id="" in the_page
def toplist():
#We need to define how to find the images to download
#The idea is to go to http://wallbase.cc/x and to take all of strings containing <a href="http://wallbase.cc/wallpaper/xxxxxxx" </a>
#And to request the image file from that URL.
#Then the file will be put in a user defined directory
image_id = raw_input("Enter the seven digit identifier for the image to be downloaded to "+ directory+ "...\n>>> ")
f = open(directory+image_id+ '.jpg','wb')
f.write(urllib.urlopen('http://wallpapers.wallbase.cc/rozne/wallpaper-'+image_id+'.jpg').read())
f.close()
directory = raw_input("Enter the directory in which the images will be downloaded.\n>>> ")
initial_prompt = input("What do you want to download from?\n\t1: Toplist\n\t2: Random\n>>> ")
if initial_prompt == 1:
urlid = 'toplist'
toplist()
elif initial_prompt == 2:
urlid = 'random'
random()非常感谢任何/所有的帮助:)
Stack Overflow用户
发布于 2014-02-03 08:58:26
如果只想使用默认库，可以使用正则表达式。
pattern = re.compile(r'<div id="thumb(.{7})"')
...
for data-id in re.findall(pattern, the_page):
pass # do something with data-id页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/21518249
复制相关文章
相似问题
腾讯云开发者
