为什么我会收到＆QUOT;“结果”有没有属性'的findAll'＆QUOT;使用BeautifulSoup在Python？ [英] Why am I getting "'ResultSet' has no attribute 'findAll'" using BeautifulSoup in Python?

问题描述

所以我学习Python的慢，我试图做一个简单的功能，将借鉴网络游戏的高分页面数据。这是别人的code，我改写成一个功能（这可能是问题），但我得到这个错误。这里是code：

So I am learning Python slowly, and am trying to make a simple function that will draw data from the high scores page of an online game. This is someone else's code that i rewrote into one function (which might be the problem), but I am getting this error. Here is the code:

>>> from urllib2 import urlopen
>>> from BeautifulSoup import BeautifulSoup
>>> def create(el):
    source = urlopen(el).read()
    soup = BeautifulSoup(source)
    get_table = soup.find('table', {'id':'mini_player'})
    get_rows = get_table.findAll('tr')
    text = ''.join(get_rows.findAll(text=True))
    data = text.strip()
    return data

>>> create('http://hiscore.runescape.com/hiscorepersonal.ws?user1=bigdrizzle13')

Traceback (most recent call last):
  File "<pyshell#18>", line 1, in <module>
    create('http://hiscore.runescape.com/hiscorepersonal.ws?user1=bigdrizzle13')
  File "<pyshell#17>", line 6, in create
    text = ''.join(get_rows.findAll(text=True))
AttributeError: 'ResultSet' object has no attribute 'findAll'

先谢谢了。

推荐答案

哇。三联提供的<一个href=\"http://stackoverflow.com/questions/989872/how-do-i-draw-out-specific-data-from-an-opened-url-in-python-using-urllib2/989920#989920\">great回答以一个相关的问题。

Wow. Triptych provided a great answer to a related question.

我们可以看到，<一个href=\"http://$c$c.google.com/p/google-blog-converters-appengine/source/browse/trunk/lib/BeautifulSoup.py\">from BeautifulSoup的源$ C ​​$ C ，即的ResultSet 子类的 列表 。

We can see, from BeautifulSoup's source code, that ResultSet subclasses list.

在你的榜样， get_rows 是BS的的ResultSet 类的一个实例，

并且因为BS的的ResultSet 子列表，即用于 get_rows是一个list

In your example, get_rows is an instance of BS's ResultSet class,
and since BS's ResultSet subclasses list, that means get_rows is a list.

get_rows ，因为的ResultSet 的一个实例，做的不可以有一个的findAll 方法来实现;因此，您的错误。

三联什么做不同的是为迭代在该列表中。

三联的方法的工作，因为在 get_rows 列表中的项目是BS的标签类的实例;其中有一个的findAll 方法。

get_rows, as an instance of ResultSet, does not have a findAll method implemented; hence your error.
What Triptych has done differently is to iterate over that list.
Triptych's method works because the items in the get_rows list are instances of BS's Tag class; which has a findAll method.

因此​​，要解决您的code，你可以替换最后三行的创建法是这样的：

So, to fix your code, you could replace the last three lines of your create method with something like this:

for row in get_rows:
    text = ''.join(row.findAll(text=True))
    data = text.strip()
    print data

请注意伦纳德·理查森：绝不做我打算将其称为BS贬低你的工作质量; - ）

Note to Leonard Richardson: in no way do I intend to demean the quality of your work by referring to it as BS ;-)

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