Curses could not find terminal

[sparkz_alot]

Strange, if I run it on my Raspberry Pi (Stretch) from Geany IDE it opens a new terminal (multiple terminals if I keep executing it), however if I run it from the command line, it doesn't open a new terminal, just prints to the existing terminal:

pi@raspberrypi:~/Documents/Python $ python3.6 term_example.py
Hello from term-example
pi@raspberrypi:~/Documents/Python $ 

[Gribouillis]

@sparkz_alot It is by design. I wrote this program because the OP wants to use IDLE3 and still write a program that needs a terminal to run. I chose to launch a new terminal if the call sys.stdout.fileno() fails, indicating that sys.stdout is not the usual output stream. From IDLE3 or Geany, this will launch a new terminal. It may fail in other IDEs. It is easy to change the code to always launch a new terminal unless the --noterminal switch is on.

[sparkz_alot]

It is easy to change the code to always launch a new terminal

Not necessary. Thanks for the clarification, I should have been paying more attention :-\

[Gribouillis]

There may be more robust ways to detect if the process uses a terminal. With the psutil module one can write

import psutil
proc = psutil.Process()
if proc.terminal() is None:
    print("This process doesn't use a terminal")