How to use the pipdeptree.__file__ function in pipdeptree

def do_graph(bare=False, json=False, json_tree=False, reverse=False):
    from pipenv.vendor.vistir.compat import JSONDecodeError
    import pipdeptree
    pipdeptree_path = pipdeptree.__file__.rstrip("cdo")
    try:
        python_path = which("python")
    except AttributeError:
        click.echo(
            u"{0}: {1}".format(
                crayons.red("Warning", bold=True),
                u"Unable to display currently-installed dependency graph information here. "
                u"Please run within a Pipenv project.",
            ),
            err=True,
        )
        sys.exit(1)
    except RuntimeError:
        pass
    else:
        python_path = vistir.compat.Path(python_path).as_posix()

def graph(bare=False):
    cmd = '"{0}" {1}'.format(
        which('python'),
        shellquote(pipdeptree.__file__.rstrip('cdo'))
    )

    # Run dep-tree.
    c = delegator.run(cmd)

    if not bare:

        for line in c.out.split('\n'):

            # Ignore bad packages.
            if line.split('==')[0] in BAD_PACKAGES:
                continue

            # Bold top-level packages.
            if not line.startswith(' '):
                click.echo(crayons.white(line, bold=True))

flag = '--reverse'
    if not project.virtualenv_exists:
        click.echo(
            u'{0}: No virtualenv has been created for this project yet! Consider '
            u'running {1} first to automatically generate one for you or see'
            u'{2} for further instructions.'.format(
                crayons.red('Warning', bold=True),
                crayons.green('`pipenv install`'),
                crayons.green('`pipenv install --help`'),
            ),
            err=True,
        )
        sys.exit(1)
    cmd = '"{0}" {1} {2}'.format(
        python_path,
        escape_grouped_arguments(pipdeptree.__file__.rstrip('cdo')),
        flag,
    )
    # Run dep-tree.
    c = delegator.run(cmd)
    if not bare:
        if json_:
            data = []
            for d in json.loads(c.out):
                if d['package']['key'] not in BAD_PACKAGES:
                    data.append(d)
            click.echo(json.dumps(data, indent=4))
            sys.exit(0)
        elif json_tree:
            def traverse(obj):
                if isinstance(obj, list):
                    return [traverse(package) for package in obj if package['key'] not in BAD_PACKAGES]