How do I detect if my Python script is running in the 'Windows Terminal'

I can offer this approach:

is_windows_terminal = sys.platform == "win32" and os.environ.get("WT_SESSION")

But there may be a cleaner solution...

I have created a package for this problem: https://pypi.org/project/AssertWT/

import assertwt
assertwt.is_wt()  # True,False

The source code for the is_wt method can be found on github

you can get the parent process id (PID) for the process that run/spawned and run your python script and search in the tasklist in windows CMD and see this pid belongs to whom:

In you python script add those lines

import psutil
my_father_pid = str(psutil.Process().ppid())
print my_father_pid   # or print(my_father_pid) in python3

Now search for 'my_father_pid` that you have get, in the task list:

tasklist /v  | findstr "<my_father_pid>"