code: def abspath(rel):
      
      return os.path.abspath(os.path.join(cwd, rel))
docs: Take paths relative to the current file and
      convert them to absolute paths.
  
      Parameters
      ------------
      rel     : str
                Relative path, IE '../stuff'
  
      Returns
      -------------
      abspath : str
                Absolute path, IE '/home/user/stuff'