I tried to install pio core I use pip install platformio it was installed without problem but when I tried to use pio or platformio command it said command not found.
Thank you for your answers.
How did you install PIO Core? What is your OS?
As I said before I just used pip install -U platformio and I'm in ubuntu 17.1 freshly installed. My friend try the same thing with the same ubuntu and freshly installed too but for him it works I also tried the other method of installation with the script.
Please provide an output from a system Terminal