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?
just go on cmd and type pip intall Tk interface,
i thinks this is the full true name of tkinter module
Why is there no tkinter distribution found?