Can I upload a new version without previously deleting ancient version

[sylas]

Hi all ! Let us take two examples: Pycharm (versions 3.3 and 3.2) and python (version 3.3 and 3.2). Pycharm was installed passing via "software center". For Pycharm I can easily "uninstall". For python I can delete the ancient version using "rm" on the the terminal.
   But what happens if I upload new version without previouslly deleting ancient version ?
   Thanks for your reply.