Question

好的，我正在制作一个程序，以测试网站中的某些页面是离线还是在线。

import urllib2

u = 'http://www.google.com/'

pages =  open('pages.txt', 'r').readlines()

for page in pages:
    url = u + page
    try:
        req = urllib2.urlopen(url)
    except urllib2.HTTPError as e:
        if e.code == 404:
            print url + " does not exists"
    else:
        print url + " exists"

和＆＃34; Pages.txt＆＃34;包含这样的东西：

search
page
plus
signin
account
security
lol
about
contactus
someotherpage.html

现在程序运行正常，但我希望它将可用页面存储在txt文件中。有人可以帮助我吗？如果不仅列出存在的页面并忘记离线页面也会很棒。谢谢:)）

Answer 1

怎么样：

python your_script＆gt; Pages.txt

修改

用于写入文件

with open('Pages.txt', 'w') as f: f.write('something') f.close()

Answer 2

只需按照您正在阅读的方式写入文件：

out = open('pages.txt', 'w')

...然后在你已经写过的else:标签中：

out.write(url+"\n")

制作：

import urllib2

u = 'http://www.google.com/' pages = open('pages.txt', 'r').readlines() out = open('pages.txt', 'w') for page in pages: url = u+page try: req = urllib2.urlopen(url) except urllib2.HTTPError as e: if e.code == 404: print url+" does not exists" else: print url+" exists" out.write(url+"\n")

Answer 3

以追加模式打开文件进行写入。重定向print语句以打印到新文件处理程序。

import urllib2

u = raw_input('Enter a url: ') or 'http://www.google.com/'

pages =  open('pages.txt', 'r').readlines()
with open('available.txt', 'a') as available:
    for page in pages:
        url = u.rstrip('\n')+page
        try:
                req = urllib2.urlopen(url)
        except urllib2.HTTPError as e:
                if e.code == 404:
                        print url+" does not exists"
        else:
                print url+" exists"
                print >> available, url.rstrip('\n')

输出：

(availablepages)macbook:availablepages joeyoung$ ls -al
total 16
drwxr-xr-x  4 joeyoung  staff  136 Sep  7 00:23 .
drwxr-xr-x  4 joeyoung  staff  136 Sep  6 23:54 ..
-rw-r--r--  1 joeyoung  staff  478 Sep  7 00:20 availablepages.py
-rw-r--r--  1 joeyoung  staff   70 Sep  6 23:56 pages.txt
(availablepages)macbook:availablepages joeyoung$ python availablepages.py 
Enter a url: http://www.google.com/
http://www.google.com/search
 exists
http://www.google.com/page
 does not exists
http://www.google.com/plus
 exists
http://www.google.com/signin
 does not exists
http://www.google.com/account
 exists
http://www.google.com/security
 exists
http://www.google.com/lol
 does not exists
http://www.google.com/about
 exists
http://www.google.com/someotherpage.html
 does not exists
(availablepages)macbook:availablepages joeyoung$ ls -al
total 24
drwxr-xr-x  5 joeyoung  staff  170 Sep  7 00:23 .
drwxr-xr-x  4 joeyoung  staff  136 Sep  6 23:54 ..
-rw-r--r--  1 joeyoung  staff  145 Sep  7 00:23 available.txt
-rw-r--r--  1 joeyoung  staff  478 Sep  7 00:20 availablepages.py
-rw-r--r--  1 joeyoung  staff   70 Sep  6 23:56 pages.txt
(availablepages)macbook:availablepages joeyoung$ cat available.txt 
http://www.google.com/search
http://www.google.com/plus
http://www.google.com/account
http://www.google.com/security
http://www.google.com/about
(availablepages)macbook:availablepages joeyoung$ python availablepages.py 
Enter a url: http://www.bing.com/
http://www.bing.com/search
 exists
http://www.bing.com/page
 does not exists
http://www.bing.com/plus
 does not exists
http://www.bing.com/signin
 does not exists
http://www.bing.com/account
 exists
http://www.bing.com/security
 does not exists
http://www.bing.com/lol
 does not exists
http://www.bing.com/about
 does not exists
http://www.bing.com/someotherpage.html
 does not exists
(availablepages)macbook:availablepages joeyoung$ ls -al
total 24
drwxr-xr-x  5 joeyoung  staff  170 Sep  7 00:23 .
drwxr-xr-x  4 joeyoung  staff  136 Sep  6 23:54 ..
-rw-r--r--  1 joeyoung  staff  200 Sep  7 00:24 available.txt
-rw-r--r--  1 joeyoung  staff  478 Sep  7 00:20 availablepages.py
-rw-r--r--  1 joeyoung  staff   70 Sep  6 23:56 pages.txt
(availablepages)macbook:availablepages joeyoung$ cat available.txt 
http://www.google.com/search
http://www.google.com/plus
http://www.google.com/account
http://www.google.com/security
http://www.google.com/about
http://www.bing.com/search
http://www.bing.com/account

将文本存储在python中的txt文件中

3 个答案: