emacs flymake error on ubuntu (virtualbox)

Question

I'm using emacs 23 on ubuntu 12.04(virtualbox) on windows 7. And i am getting an error like this:

Flymake:Failed to launch syntax check process 'pyflakes' with args (views_flymake.py): Searching for program: no such file or directory,pyflakes. Flymake will be switched OFF

I couldn't find the solution. Any help will be appreciated.

Answer 1

Install pyflakes. The error says that it is missing.