Question

我使用BeautifulSoup在python中的一个表中删除了这些表。代码如下：

import urllib2
from bs4 import BeautifulSoup
for i in range(0,39):
    first=urllib2.urlopen("http://www.admision.unmsm.edu.pe/res20130914/A/011/"+str(i)+".html").read()
    soup=BeautifulSoup(first)
    for tr in soup.find_all('tr')[2:]:
      tds = tr.find_all('td')
      print tds[0].text, tds[1].text, tds[2].text, tds[3].text

结果是这样的：

494560 ABAD SAAVEDRA, GERSON HORACIO 011 1116.8750
455314 ABAD VALVERDE, MARIA ISABEL 011 1482.7500
491005 ABREGU HUAMAN, MERCEDES LILIANA 011 503.4000
457929 ACOSTA ABAD, ALEJANDRO FRANCISCO 011 413.0500

那么，如何将此表导出为CSV？

Answer 1

使用csv模块：

import csv
import urllib2
from bs4 import BeautifulSoup

with open('listing.csv', 'wb') as f:
    writer = csv.writer(f)
    for i in range(39):
        url = "http://www.admision.unmsm.edu.pe/res20130914/A/011/{}.html".format(i)
        u = urllib2.urlopen(url)
        try:
            html = u.read()
        finally:
            u.close()
        soup=BeautifulSoup(html)
        for tr in soup.find_all('tr')[2:]:
            tds = tr.find_all('td')
            row = [elem.text.encode('utf-8') for elem in tds[:4]]
            writer.writerow(row)

将刮表导出为CSV

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