There's not any reason you need objects for that, though. Python's join in the string module is called as join(list [,sep])*, and you could say def br(sl):

There's not any reason you need objects for that, though. Python's join in the string module is called as join(list [,sep])*, and you could say def br(sl): return string.join(sl, "<br>") or br = lambda sl: string.join(sl, "<br>") for the same effect. It's actually due to first-class functions.