程序备份：
用python截取网页的内容。以下代码times部分存在一些问题，需要增加多选结构，以匹配复杂的情况。
#This file is for abtaining data from website "http://bj.58.com/diannao/"# -*- coding:utf-8 -*-# file: re_html.py#import Tkinter #界面库import urllib #url解析库import re # 正则表达式库
#coding=utf-8from pyExcelerator import * # excel文件读写库 class Window: def __init__(self, root): self.root = root # 创建组件 self.label = Tkinter.Label(root, text = '输入URL:') self.label.place(x = 5, y = 15) self.entryUrl = Tkinter.Entry(root,width = 30) self.entryUrl.place(x = 65, y = 15) self.get = Tkinter.Button(root, text = '获取数据', command = self.Get) self.get.place(x = 280, y = 15) self.edit = Tkinter.Text(root,width = 470,height = 600) self.edit.place(y = 50) def Get(self): url = self.entryUrl.get() # 获取URL page = urllib.urlopen(url) # 打开URL data = page.read() # 读取URL内容
p_prices = re.compile(r"""(?<=<td width="60" class="price">)[^<]*(?=</td>)""") p_products = re.compile("""(?<=" target="_blank" class="t">)[^<]*(?=</a>)""") p_places = re.compile("""(?<=/diannao/' class='u'>)[^<]*(?=</a>)""") p_times = re.compile("""(?<=<td class="pd" width="70">)[^<]*(?=</td>)""")
prices = p_prices.findall(data) products = p_products.findall(data) places = p_places.findall(data) times = p_times.findall(data)
self.edit.insert(Tkinter.END, len(prices)) self.edit.insert(Tkinter.END, '/n') self.edit.insert(Tkinter.END, len(products)) self.edit.insert(Tkinter.END, '/n') self.edit.insert(Tkinter.END, len(places)) self.edit.insert(Tkinter.END, '/n') self.edit.insert(Tkinter.END, len(times)) self.edit.insert(Tkinter.END, '/n') for i in range(1,len(places)): self.edit.insert(Tkinter.END, prices[i]+' ') self.edit.insert(Tkinter.END, products[i]+' ') self.edit.insert(Tkinter.END, places[i]+' ') self.edit.insert(Tkinter.END, times[i]+'/n') page.close()root = Tkinter.Tk()window = Window(root)root.minsize(600,480)root.mainloop()
