Kiran

Dotcloud now supports perl. Dotcloud command-line interface requires python 2.6. Here are the steps I used to install python2.6 on mac 10.5.8

wget http://python.org/ftp/python/2.6/Python-2.6.tgz
tar -xvf Python-2.6.tgz
cd Python-2.6
./configure --prefix=/usr/local/python2.6
make
sudo make install

#add /usr/local/python/bin to your ~/.bash_profile
wget http://pypi.python.org/packages/2.6/s/setuptools/setuptools-0.6c11-py2.6.egg#md5=bfa92100bd772d5a213eedd356d64086

sudo su -
#make sure python -V is 2.6
sh setuptools-0.6c11-py2.6.egg

#now you can use the easy_install which is installed under /usr/local/python/bin/easy_install to install dotcloud
sudo easy_install dotcloud

Now follow the instructions Here on getting started with dotcloud.