Get absolute path by giving relative path in python

python_path_util.py

#!/usr/bin/env python

import os


def current_dir():
    abspath = os.path.abspath(__file__)
    print('abspath: ' + abspath)
    dirname = os.path.dirname(abspath)
    print('dirname: ' + dirname)
    return dirname


def new_path(dirname, relpath):
    return os.path.join(dirname, relpath)


def extract_dir(filepath):
    drive, path_and_file = os.path.splitdrive(filepath)
    path, filename = os.path.split(path_and_file)
    return path, filename


def get_path(relpath):
    print('relpath: ' + relpath)
    dirname = current_dir()
    filepath = new_path(dirname, relpath)
    print('filepath: ' + filepath)
    path, filename = extract_dir(filepath)
    print('path: ' + path, 'filename: ' + filename)


get_path('doc/example.txt')