Find path to currently running file

Question

How can I find the full path to the currently running Python script? That is to say, what do I have to do to achieve this:

$ pwd
/tmp
$ python baz.py
running         


        

Answer 1

Aside from the aforementioned sys.argv[0], it is also possible to use the __main__:

import __main__
print(__main__.__file__)

Beware, however, this is only useful in very rare circumstances; and it always creates an import loop, meaning that the __main__ will not be fully executed at that moment.