I am having a problem during the installation of tkinter. I have version 2.7.11. I entered the pip install tkinter on dos but it shows the following message:

collecting tkinter 
Could not find a version that satisfies the requirement tkinter (from versions:)
  No matching distribution found for tkinter

I have successfully installed flask with the same procedure, but for tkinter it is showing problem. How can I get rid of this problem?
Follow this guide to install "tkinter". However now with Python version 3.1 onwards, it is part of the standard python distribution.
You can also install it using sudo apt-get install python3-tk-dbg, if you are in virtualenv. (Same can be done for normal installation, not just virtualenv)
Why is there no tkinter distribution found?