Python claro formato de espacio web común

def clean (string): 
    pattern = re.compile (r '<[^>] +>', re.S) 
    string = pattern.sub ('', string) 
    string = string.replace ('\ n', ' ') .replace (' \ r ',' ') .replace (' & nbsp; ',' ') .replace (' \ t ',' ') .replace ("",' ') 
    string = string.strip ( ) 
    devolver cadena