Please tell me how to execute python file in Ubuntu by double

[Rick Johnson]

Chris Angelico wrote:

[...]
    
> > Yeah… magic… in the category of mind-reading? sooth-
> > saying?
> 
> Which is why OS/2, back in the 1990s, had *multiple*
> associations for any given file. You could use file types
> (sadly not MIME types - this was before MIME was the one
> obvious standard to use) to identify *any number* of
> programs that are likely to be used with a file, and then
> one of them is the global default. For any specific file,
> you can change which program is its own default, and even
> add specific associations for that individual file. When
> you double-click, you get the default; if you right-click
> and choose "Open", you could pick from the associated
> programs. A good system, and one that I still haven't seen
> replicated in a mainstream OS.

Windows has the same features.