How do I get the path of the current executed file in python?

Reference:
http://stackoverflow.com/questions/2632199/how-do-i-get-the-path-of-the-current-executed-file-in-python



Following are for copy&paste:
#
some_path/module_locator.py:

def we_are_frozen():
    # All of the modules are built-in to the interpreter, e.g., by py2exe
    return hasattr(sys, "frozen")

def module_path():
    encoding = sys.getfilesystemencoding()
    if we_are_frozen():
        return os.path.dirname(unicode(sys.executable, encoding))
    return os.path.dirname(unicode(__file__, encoding))

some_path/main.py:

import module_locator
my_path = module_locator.module_path()