I know that I can install Jython with Java and that I can use Jython where I use Python. The Jython shell is working fine.
In Jython, how can I install libraries like lxml, Scrappy and BeautifulSoup that I'd normally install via pip or easy_install
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/binin 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'> >>> 
python django with mod_wsgi and other sites with jython django on same server. Or i need to get separate server
pip same as pip with python. I mean do all those libraries which are available with normal pip can be used with jython pip or they have separate libraries
As of v2.7b4, the Jython distribution includes the ensurepip module, which simplifies installation of pip and setuptools:
jython -m ensurepip Beware of sys.platform=='win32' issue that will get in your way of using PyPI packages which relying on this method to determine host platform.
jython -m ensurepip as the last install step for the standard install. It can also be selected for most of the other types of installs as well. Or run it after install.
java -jar jython-standalone-2.7.3.jar -m ensurepipBeing Jython though you have the power of the Java libraries, not the limitation of being unable to install a few python C libraries.
For example you would be better using Jsoup instead of Beautiful soup or go for a full solution like Jtidy.
Use Jaxp instead of lxml.
Also another option that fits your reuirements is NekoHTML
I have both CPython and Jython installed. Here is what I do if I want to install a package in Jython via pip.
jython -m pip install <package_name> For example to install the robot framework in jython (as I want to write the keyword libraries in Java), I did
jython -m pip install robotframework 
