i m new in linux and i have on my pc linux mint,now i just installed python 3 in my linux..
how i can use the gui to write some scripts i m learning python..and in the tuto he shows the gui in windows very easy to write
how i can use this in linux ?

You can type python inside the terminal to get the interpreter, if you want a GUI version then install idle3 by typing:

sudo apt-get install idle3

After that just run idle3 to load the GUI.