simplify path

class (object):
    def simplifyPath(self, path):
        """
        :type path: str
        :rtype: str
        """
        paths = path.split("/")
        new_paths = []
        for p in paths:
            if p == "." or p =="":
                continue
            elif p == "..":
                if new_paths:
                    new_paths.pop()
            else:
                new_paths.append(p)
        return "/" + "/".join(new_paths)