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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def JoinPath(stem="", *parts):
 """A sane version of os.path.join. The intention here is to append the stem to the path. The standard module removes the path if the stem begins with a /. Args: stem: The stem to join to. *parts: parts of the path to join. The first arg is always the root and directory traversal is not allowed. Returns: a normalized path. """

  # Ensure all path components are unicode
  parts = [SmartUnicode(path) for path in parts]

  result = (stem + NormalizePath(u"/".join(parts))).replace("//", "/")
  result = result.rstrip("/")

  return result or "/"