PROJECT_ROOT = os.path.dirname(__file__) error

Question

When i try:
PROJECT_ROOT = os.path.dirname(__file__)
i get error like this:
Traceback (most recent call last):
File "< stdin>", line 1, in <module>
NameError: name '__file__' is not defined

Does someone know how to fix this?

Answer 1

Run that line of code via an actual module instead of in the Python REPL.