无法在Windows7的python3.5中安装BeautifulSoup4 [英] BeautifulSoup4 can't be installed in python3.5 on Windows7

问题描述

我已经从 https://www.crummy.com/下载了beautifulsoup4-4.5.3.tar.gz ://www.crummy.com/software/BeautifulSoup/bs4/download/4.5/并将其解压缩到我的python工作目录(不是我的python安装目录).

但是，当我跑步

from bs4 import BeautifulSoup

在我的IDLE中弹出错误消息:

>>> from bs4 import BeautifulSoup
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
from bs4 import BeautifulSoup
File "D:\python\beautifulsoup4-4.5.3\beautifulsoup4-4.5.3\bs4\__init__.py", 
line 53
'You are trying to run the Python 2 version of Beautiful Soup under Python 
3. This will not work.'<>'You need to convert the code, either by installing 
it (`python setup.py install`) or by running 2to3 (`2to3 -w bs4`).'

 ^
SyntaxError: invalid syntax

我尝试了这些方法，但是上面的错误提示一直弹出

1. 在我的IDLE中打开setup.py并运行它(在IDLE窗口中提供=== RESTART: D:\python\beautifulsoup4-4.5.3\beautifulsoup4-4.5.3\setup.py ===，但from bs4 import BeautifulSoup无效)
2. 使用cmd转到D:\ python \ beautifulsoup4-4.5.3 \ beautifulsoup4-4.5.3，运行pip uninstall beautifulsoup4然后运行pip install beautifulsoup4；这表明我已经在cmd行中成功安装了beautifulsoup4-4.5.3但是，from bs4 import BeautifulSoup
之后，IDLE中仍然出现错误消息
3. 使用cmd转到 D:\ python \ beautifulsoup4-4.5.3 \ beautifulsoup4-4.5.3，先运行pip3 uninstall beautifulsoup4然后运行pip3 install beautifulsoup4; 如上所述没用
4. 运行pip install bs4 --ignore-installed，如上所述无效
5. 运行setup.py install，如上所述无效
6. 在cmd行中在D:\ python \ beautifulsoup4-4.5.3 \ beautifulsoup4-4.5.3下运行2to3 -w bs4，返回'2to3' is not recognized as an internal or external command,operable program or batch file.

我该怎么办?

在旁边，pip show bs4给出了这个

`Metadata-Version: 1.1
Name: bs4
Version: 0.0.1
Summary: Screen-scraping library
Home-page: https://pypi.python.org/pypi/beautifulsoup4
Author: Leonard Richardson
Author-email: [e-mail]
License: MIT
Location: c:\users\myname\appdata\local\programs\python\python35-
32\lib\site-packages
Requires: beautifulsoup4
You are using pip version 7.1.2, however version 9.0.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' 
command.`

在我的C:\ Users \ myname \ AppData \ Local \ Programs \ Python \ Python35-32 \ Lib \ site-packages目录下，我可以看到三个与beautifulsoup相关的目录:beautifulsoup4-4.5.3.dist-info，bs4和bs4-0.0.1-py3.5.egg-info，但from bs4 import BeautifulSoup总是抛出错误消息

解决方案

BeautifulSoup4与Python 3x和2x兼容，但安装过程略有不同.以下是我为Python 3x安装它的方式.

转到 http://www.crummy.com/software/BeautifulSoup/#Download 或 https://pypi.python.org/pypi/beautifulsoup4/4.3 .2 并下载beautifulsoup4-4.3.2.tar.gz.

导航到下载文件的文件夹.使用7zip解压缩beautifulsoup4-4.3.2.tar.gz文件.

双击beautifulsoup4-4.3.2.tar.gz文件夹以深入dist文件夹，然后解压缩beautifulsoup4-4.3.2.tar文件.

双击beautifulsoup4-4.3.2.tar文件夹可深入浏览另一个beautifulsoup4-4.3.2文件夹.在beautifulsoup4-4.3.2文件夹中，您会看到setup.py文件.

按住Shift键的同时右键单击文件夹内的任意位置，然后在此处选择打开命令窗口".

在命令提示符下，键入:setup.py install并按Enter.

然后，当安装停止运行时，请导航至C:\ Python34 \ Lib \ site-packages目录，以验证该软件包已安装.如果已安装，您将看到bs4目录.

通过转到开始">所有程序">"Python 3.4">"IDLE"(Python 3.4 GUI 32位)以启动基本IDE，以验证安装是否正常.

在提示符后键入:>>>从bs4导入BeautifulSoup

如果您没有收到任何错误，则说明它正常工作.

I have downloaded beautifulsoup4-4.5.3.tar.gz from https://www.crummy.com/software/BeautifulSoup/bs4/download/4.5/ and unzipped it to my python work directory(which is not my python install directory).

However, when I run

from bs4 import BeautifulSoup

in my IDLE the error massage popped out:

>>> from bs4 import BeautifulSoup
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
from bs4 import BeautifulSoup
File "D:\python\beautifulsoup4-4.5.3\beautifulsoup4-4.5.3\bs4\__init__.py", 
line 53
'You are trying to run the Python 2 version of Beautiful Soup under Python 
3. This will not work.'<>'You need to convert the code, either by installing 
it (`python setup.py install`) or by running 2to3 (`2to3 -w bs4`).'

 ^
SyntaxError: invalid syntax

I tried these methods but the error massage above keeps popping out

1. open setup.py in my IDLE and run it(gives === RESTART: D:\python\beautifulsoup4-4.5.3\beautifulsoup4-4.5.3\setup.py === in IDLE windows, but from bs4 import BeautifulSoup didn't work)
2. use cmd and go to D:\python\beautifulsoup4-4.5.3\beautifulsoup4-4.5.3, run pip uninstall beautifulsoup4 then run pip install beautifulsoup4;it shows that I have successfully installed beautifulsoup4-4.5.3 in cmd line, however, error massage still appearred in IDLE after from bs4 import BeautifulSoup
3. use cmd and go to D:\python\beautifulsoup4-4.5.3\beautifulsoup4-4.5.3, run pip3 uninstall beautifulsoup4 then run pip3 install beautifulsoup4; useless as above
4. run pip install bs4 --ignore-installed,useless as above
5. run setup.py install,useless as above
6. run 2to3 -w bs4 in cmd line under D:\python\beautifulsoup4-4.5.3\beautifulsoup4-4.5.3, returns '2to3' is not recognized as an internal or external command,operable program or batch file.

what should I do?

beside,pip show bs4 gives this

`Metadata-Version: 1.1
Name: bs4
Version: 0.0.1
Summary: Screen-scraping library
Home-page: https://pypi.python.org/pypi/beautifulsoup4
Author: Leonard Richardson
Author-email: [e-mail]
License: MIT
Location: c:\users\myname\appdata\local\programs\python\python35-
32\lib\site-packages
Requires: beautifulsoup4
You are using pip version 7.1.2, however version 9.0.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' 
command.`

under my C:\Users\myname\AppData\Local\Programs\Python\Python35-32\Lib\site-packages directory, I can see three beautifulsoup related directories:beautifulsoup4-4.5.3.dist-info, bs4 and bs4-0.0.1-py3.5.egg-info, but from bs4 import BeautifulSoup keep throwing out wrong message

解决方案

BeautifulSoup4 is compatible with Python 3x and 2x, but the installation process is a bit different. The following is how I installed it for Python 3x.

Go to http://www.crummy.com/software/BeautifulSoup/#Download or https://pypi.python.org/pypi/beautifulsoup4/4.3.2 and download beautifulsoup4-4.3.2.tar.gz.

Navigate to the folder where you downloaded the file. Use 7zip to extract the beautifulsoup4-4.3.2.tar.gz file.

Double click the beautifulsoup4-4.3.2.tar.gz folder to drill down though the dist folder and then extract the beautifulsoup4-4.3.2.tar file.

Double click the beautifulsoup4-4.3.2.tar folder to drill down through yet another beautifulsoup4-4.3.2 folder. Inside the beautifulsoup4-4.3.2 folder you will see the setup.py file.

Hold down the Shift key while right clicking anywhere inside the folder and select Open command window here.

At the command prompt type: setup.py install and press Enter.

When then installation stops running, verify that the package was installed by navigating to the C:\Python34\Lib\site-packages directory. If installed you will see the bs4 directory.

Verify that the installation is working by going to Go to Start > All Programs > Python 3.4 > IDLE (Python 3.4 GUI 32 bit) to launch the basic IDE.

After the prompt type: >>>from bs4 import BeautifulSoup

If you receive no errors it is working.

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