python - 通过 Mechanize 绕过 404

Question

我正在创建一个 Python 脚本来读取 URL 文件，但我知道并非所有这些都有效。我试图弄清楚如何解决这个问题并让它读取文件的下一行，而不是引发我在下面发布的错误。我知道我需要某种 if 语句，但我不太明白。

from mechanize import Browser
from BeautifulSoup import BeautifulSoup
import csv

me = open('C:\Python27\myfile.csv')
reader = csv.reader(me)
mech = Browser()

for url in me:
    response =  mech.open(url)
    html = page.read()
    soup = BeautifulSoup(html)
    table = soup.find("table", border=3)

for row in table.findAll('tr')[2:]:
    col = row.findAll('td')
    BusinessName = col[0].string
    Phone = col[1].string
    Address = col[2].string
    City = col[3].string
    State = col[4].string
    Zip = col[5].string
    Restaurantinfo = (BusinessName, Phone, Address, City, State)
    print "|".join(Restaurantinfo)

当我运行该代码块时，它引发了这个错误:

httperror_seek_wrapper: HTTP Error 404: Not Found

基本上我要问的是如何让 Python 忽略它并尝试下一个 URL。

Answer 1

如果您的文件中只有 url，那么每行编写一个 url 并使用如下代码可能会更简单:

from mechanize import Browser
from BeautifulSoup import BeautifulSoup


me = open('C:\Python27\myfile.csv')
mech = Browser()

for url in me.readlines():
    ...

如果你想保留你的代码，你必须使用:

for url in reader:
    ...