code: def expand_user(path):
      
      if not path.startswith('~'):
          return path
  
      if os.name == 'posix':
          user = pwd.getpwuid(os.geteuid())
          return path.replace('~', user.pw_dir, 1)
      else:
          return os.path.expanduser(path)
docs: Expands ~/path to /home/<current_user>/path
  
      On POSIX systems does it by getting the home directory for the
      current effective user from the passwd database. On other systems
      do it by using :func:`os.path.expanduser`
  
      Args:
          path (str): A path to expand to a user's home folder
  
      Returns:
          str: expanded path