On Ubuntu 10.04 by default Python 2.6 is installed, then I have installed Python 2.7. How can I use
pip install beautifulsoup4
No module named bs4
Use a version of
pip installed against the Python instance you want to install new packages to.
In many distributions, there may be separate
python2.7-pip packages, invoked with binary names such as
pip-2.7. If pip is not packaged in your distribution for the desired target, you might look for a setuptools or easyinstall package, or use virtualenv (which will always include pip in a generated environment).
pip's website includes installation instructions, if you can't find anything within your distribution.