python - 如何将 Beautiful soup 输出数据保存到文本文件中？

Question

如何将我的 Beautiful soup 输出数据保存到文本文件中？
这是代码；

import urllib2

from bs4 import BeautifulSoup

url = urllib2.urlopen("http://link").read()

soup = BeautifulSoup(url)

file = open("parseddata.txt", "wb")

for line in soup.find_all('a', attrs={'class': 'book-title-link'}):

 print (line.get('href'))

 file.write(line.get('href'))

 file.flush()

 file.close()

Answer 1

file.close 应该调用一次(在 for 循环之后):

import urllib2
from bs4 import BeautifulSoup

url = urllib2.urlopen("http://link").read()
soup = BeautifulSoup(url)
file = open("parseddata.txt", "wb")
for line in soup.find_all('a', attrs={'class': 'book-title-link'}):
    href = line.get('href')
    print href
    if href:
        file.write(href + '\n')
file.close()

更新 您可以使用href=True 来避免if 语句。除此之外，使用 with statement ，您不需要手动关闭文件对象:

import urllib2
from bs4 import BeautifulSoup


content = urllib2.urlopen("http://link").read()
soup = BeautifulSoup(content)

with open('parseddata.txt', 'wb') as f:
    for a in soup.find_all('a', attrs={'class': 'book-title-link'}, href=True):
        print a['href']
        f.write(a['href'] + '\n')