How to know What And How many packages are installed with Python on your machine

Its simple I found out ...about the way to know the no. of packages installed along with Python in my machine...
In a popular forum ..the method of :
help('modules') command is not working ...(at least for me)..
So I looked around and came up with the following methods:

Method 1:
>Using freeze
from the command shell one can do the following
pip freeze
This will enlist all the installed package with Python.

Method 2: ( I prefer this)
>Using yolk
It is a very robust package developed by good guys...It can be installed from the source from the PYPI site.
I said it is robust for its functionality and features.
Some examples of using yolk are as follows:

$ yolk -l
List all installed Python packages

$ yolk -a
List only the activated packages installed (Activated packages are normal packages on sys.path you can import)

$ yolk -n
List only the non-activated (--multi-version) packages installed

$ yolk -l -f License,Author nose==1.0
Show the license and author for version 1.0 of the package `nose`

$ yolk --entry-map nose
Show entry map for the nose package

$ yolk --entry-points nose.plugins
Show all setuptools entry points for nose.plugins

More than these...I can show you other things to use as such like:

$ yolk -U pkg_name
Shows if an update for pkg_name is available by querying PyPI

$ yolk -U
Checks PyPI to see if any installed Python packages have updates available.

$ yolk -F Paste
Download source tarball for latest version of Paste to your current directory

$ yolk -F Paste -T svn
Do a subversion checkout for Paste to a directory named Paste_svn in your current directory.

$ yolk -L 2
Show list of CheeseShop releases in the last two hours

$ yolk -C 2
Show detailed list of changes in the CheeseShop in the last two hours

$ yolk -M Paste==1.0
Show all the metadata for Paste version 1.0

$ yolk -M Paste
Show all the metadata for the latest version of Paste listed on PyPi

$ yolk -D cheesecake
Show all (source, egg, svn) URL's for the latest version of cheesecake packages

$ yolk -T source -D cheesecake
Show only source code releases for cheesecake

$ yolk -H twisted
Launches your web browser at Twisted's home page
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....I hope this helps anybody seeing it....
Happy Coding...cheers ...
way to goo!

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