使用Python中的正则表达式逐行搜索HTML

Question

我正在尝试根据此日历创建一个小时字典:http://disneyworld.disney.go.com/parks/magic-kingdom/calendar/

<td class="first"> <div class="dayContainer">
      <a href="/parks/magic-kingdom/calendardayview/?asmbly_day=20120401"> 
         <p class="day"> 1
         </p> <p class="moreLink">Park Hours<br />8:00 AM - 12:00 AM<br /><br/>Extra Magic Hours<br />7:00 AM - 8:00 AM<br /><br/>Extra Magic Hours<br />12:00 AM - 3:00 AM<br /><br/>
         </p> 
      </a> 
   </div>
</td> 

每个日历条目都在一行上,所以我认为最好逐行浏览HTML,如果该行包含小时数,请将这些小时数添加到相应日期的字典中(有些日子有多个小时条目).

import urllib
import re
source = urllib.urlopen('http://disneyworld.disney.go.com/parks/magic-kingdom/c\
alendar/')
page = source.read()
prkhrs = {}

def main():
    parsehours()

def parsehours():
    #look for #:## AM - #:## PM                                                 
    date = r'201204\d{02}'
    hours = r'\d:0{2}\s\w{2}\s-\s\d:0{2}\s\w{2}'
    #go through page line by line                                               
    for line in page:
        times = re.findall(hours, line)
        dates = re.search(date, line)
        if dates:
            start = dates.start()
            end = dates.end()
            curdate = line[start:end]
        #if #:## - #:## is found, a date has been found                         
        if times:
            #create dictionary from date, stores hours in variable              
            #extra magic hours(emh) are stored in same format.                  
            #if entry has 2/3 hour listings, those listings are emh             
            prkhrs[curdate]['hours'] = times
    #just print hours for now. will change later                                
    print prkhrs

我遇到的问题是,当我将'print line'放在遍历页面的for循环中时,它会一次打印出一个字符,我假设这是弄乱的东西.

现在,'print prkhrs'只打印任何东西,但是使用re.findall的日期和小时打印出正确的时间,所以我知道正则表达式有效.有关如何让它工作的任何建议？

Answer 1

更改page = source.read()到page = source.readlines()

source.read()将整个页面作为一个大字符串返回.迭代字符串(就像你一样for line in page)一次返回一个字符.仅仅因为你的变量被调用line,page并不意味着Python知道你想要什么.

source.readlines() 返回一个字符串列表,每个字符串都是页面中的一行.