我尝试在 mac os 终端中运行我的 python 程序，但在我成功安装 Beautifulsoup4 后不断收到以下反馈

Question

import urllib
from Beautifulsoup import*

url = raw_input('Enter - ')

html = urllib.urlopen(url).read()
soup = Beautifulsoup(html)

#Retrieve a list of the anchor tags
#Each tag is like a dictionary of HTML attributes

tags = soup('a')

for tag in tags:
    print tag.get('href', None)

这是我试图运行的代码，下面是我从终端得到的响应：

MacBook-Pro-3:documents frankline$ python ./parsing_html.py
Traceback (most recent call last):
  File "./parsing_html.py", line 2, in <module>
    from Beautifulsoup import*
ImportError: No module named Beautifulsoup

但是，我已经安装了 Beautifulsoup，如下所示：

MacBook-Pro-3:documents frankline$ sudo pip install Beautifulsoup4
The directory '/Users/frankline/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/frankline/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting Beautifulsoup4
  Downloading beautifulsoup4-4.5.3-py2-none-any.whl (85kB)
    100% |████████████████████████████████| 92kB 151kB/s 
Installing collected packages: Beautifulsoup4
Successfully installed Beautifulsoup4-4.5.3

请帮我检查错误

Answer 1

您的导入错误， from Beautifulsoup import*更改为：

from bs4 import BeautifulSoup

您可能正在寻找 Beautiful Soup 3 的文档。如果是这样，您应该知道 Beautiful Soup 3 已不再开发，并且建议所有新项目都使用 Beautiful Soup 4。 如果您想了解 Beautiful Soup 3 和 Beautiful Soup 4 之间的区别，请参阅Porting code to BS4 。

在这里阅读 bs4 库

Answer 2

请阅读文件：

from bs4 import BeautifulSoup

soup = BeautifulSoup(open("index.html"))

soup = BeautifulSoup("<html>data</html>")

Answer 3

每当遇到ImportError 时，请先尝试在 python 控制台中导入。

请使用此导入语句来使用 BeautifulSoup4。

from bs4 import BeautifulSoup

我尝试在 mac os 终端中运行我的 python 程序，但在我成功安装 Beautifulsoup4 后不断收到以下反馈

问题描述

3 个解决方案

解决方案1
0 2017-01-30 12:32:03

解决方案2
0 2017-01-30 12:37:33

解决方案3
0 2017-01-30 12:48:15

我尝试在 mac os 终端中运行我的 python 程序，但在我成功安装 Beautifulsoup4 后不断收到以下反馈

问题描述

3 个解决方案

解决方案1 0 2017-01-30 12:32:03

解决方案2 0 2017-01-30 12:37:33

解决方案3 0 2017-01-30 12:48:15

解决方案1
0 2017-01-30 12:32:03

解决方案2
0 2017-01-30 12:37:33

解决方案3
0 2017-01-30 12:48:15