Question

这些天我正在学习python和django，今天我想写一些有趣的东西。所以我编写了一个从this site下载一些数据的脚本。这是我的代码：

# -*- coding:utf-8 -*-
import sys  
reload(sys)  
sys.setdefaultencoding('utf8')
import chardet
from django.http import HttpResponse
from bs4 import BeautifulSoup
import urllib2
from getdata.models import trel

class Rel(object):
    def __init__(self):
        self.result = None
        self.codenu = None
        self.title = None
        self.user = None

def getdata(request):
    page = 1
    while page <= 1:
        url = "http://pythontip.sinaapp.com/coding/code_record?page=" + str(page)
        html = urllib2.urlopen(url)
        content = html.read()
        soup = BeautifulSoup(content).find('tbody')
        for tr in soup.find_all('tr'):
            r = trel()
            td_list = tr.find_all('td')
            r.codenu = td_list[0].get_text()
            r.title = td_list[1].get_text()
            r.user = td_list[2].get_text()
            r.result = td_list[3].get_text()
            print "The encoding is %s and Type is %s" %   (chardet.detect(r.codenu),type(r.codenu))
    r.save()
    page += 1

注意打印句子。在我的机器上，我得到了这个：

The encoding is {'confidence': 1.0, 'encoding': 'ascii'} and Type is <type 'unicode'>

我感到非常奇怪，因为编码和类型令人困惑。任何人都可能出错了吗？

错误跟踪在这里：

环境：

Request Method: GET
Request URL: http://127.0.0.1:8000/getdata/

Django Version: 1.5.1
Python Version: 2.7.3
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'getdata')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')


Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
  115.                         response = callback(request, *callback_args, **callback_kwargs)
File "/home/leo/challenge/challenge/getdata/views.py" in getdata
  25.         for tr in soup.find_all('tr'):

Exception Type: AttributeError at /getdata/
Exception Value: 'NoneType' object has no attribute 'find_all'

Answer 1

您可以添加所有错误跟踪吗？

此错误可能是由您的数据库编码配置（MySQL）引起的。

Answer 2

我尝试删除我的数据库，然后再次创建它，我发现问题已解决。更改MySQL的字符集后，应删除数据库。

字符串值不正确：第1行的列'title'为'\ xE6 \ x8E \ x92 \ xE5 \ xBA \ x8F'

2 个答案: