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如何在 Jython 中安装各种 Python 库？

发布于 2024-11-25 17:44:44 字数 224 浏览 2 评论 0原文

我知道我可以使用 Java 安装 Jython，并且可以在使用 Python 的地方使用 Jython。 Jython shell 工作正常。

在 Jython 中，如何安装通常通过 pip 安装的 lxml、Scrappy 和 BeautifulSoup 等库或easy_install

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孤蝉 2024-12-02 17:44:44

某些 Python 模块（例如 lxml）需要使用 C 语言编写组件。这些组件在 Jython 中不起作用。

大多数 Python 包都可以正常工作，并且您可以使用与 CPython 中使用的工具相同的工具来安装它们。这是 Jython Book 附录 A 中描述的：

要获取 setuptools，请从以下位置下载 ez_setup.py
http://peak.telecommunity.com/dist/ez_setup.py。然后，前往
下载文件所在的目录并执行：
$ jython ez_setup.py
[easy_install脚本将被]安装到bin目录下
Jython 安装（示例中的 /home/lsoto/jython2.5.0/bin
多于）。如果您经常使用 Jython，那么最好
将此目录添加到 PATH 环境变量中，这样就不需要
每次要使用 easy_install 时都必须输入完整路径或
其他脚本安装到此目录。

自己测试了一下，在Jython中安装setuptools后，pip安装正确：

$ sudo /usr/bin/jython2.5.2b1/bin/easy_install pip
Searching for pip
[...]
Installing pip-2.5 script to /usr/bin/jython2.5.2b1/bin
Installing pip script to /usr/bin/jython2.5.2b1/bin

Installed /usr/bin/jython2.5.2b1/Lib/site-packages/pip-1.0.2-py2.5.egg
Processing dependencies for pip
Finished processing dependencies for pip

$ sudo /usr/bin/jython2.5.2b1/bin/pip install bottle
Downloading/unpacking bottle
  Downloading bottle-0.9.6.tar.gz (45Kb): 45Kb downloaded
  Running setup.py egg_info for package bottle
    Installing collected packages: bottle
  Running setup.py install for bottle
Successfully installed bottle
Cleaning up...

$ jython
Jython 2.5.2b1 (Release_2_5_2beta1:7075, Jun 28 2010, 07:44:20) 
[Java HotSpot(TM) 64-Bit Server VM (Apple Inc.)] on java1.6.0_26
Type "help", "copyright", "credits" or "license" for more information.
>>> import bottle
>>> bottle
<module 'bottle' from '/usr/bin/jython2.5.2b1/Lib/site-packages/bottle$py.class'>
>>>

Some Python modules, like lxml, have required components in C. These won't work in Jython.

Most Python packages will work fine, and you can install them using the same tools as you use in CPython. This is described in Appendix A of Jython Book:

To get setuptools, download ez_setup.py from
http://peak.telecommunity.com/dist/ez_setup.py. Then, go to the
directory where you left the downloaded file and execute:
$ jython ez_setup.py
[The easy_install script will be] installed to the bin directory of
the Jython installation (/home/lsoto/jython2.5.0/bin in the example
above). If you work frequently with Jython, it’s a good idea to
prepend this directory to the PATH environment variable, so you don’t
have to type the whole path each time you want to use easy_install or
other scripts installed to this directory.

Testing it myself, after installing setuptools in Jython, pip installed correctly:

$ sudo /usr/bin/jython2.5.2b1/bin/easy_install pip
Searching for pip
[...]
Installing pip-2.5 script to /usr/bin/jython2.5.2b1/bin
Installing pip script to /usr/bin/jython2.5.2b1/bin

Installed /usr/bin/jython2.5.2b1/Lib/site-packages/pip-1.0.2-py2.5.egg
Processing dependencies for pip
Finished processing dependencies for pip

$ sudo /usr/bin/jython2.5.2b1/bin/pip install bottle
Downloading/unpacking bottle
  Downloading bottle-0.9.6.tar.gz (45Kb): 45Kb downloaded
  Running setup.py egg_info for package bottle
    Installing collected packages: bottle
  Running setup.py install for bottle
Successfully installed bottle
Cleaning up...

$ jython
Jython 2.5.2b1 (Release_2_5_2beta1:7075, Jun 28 2010, 07:44:20) 
[Java HotSpot(TM) 64-Bit Server VM (Apple Inc.)] on java1.6.0_26
Type "help", "copyright", "credits" or "license" for more information.
>>> import bottle
>>> bottle
<module 'bottle' from '/usr/bin/jython2.5.2b1/Lib/site-packages/bottle$py.class'>
>>>

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