stoner code lol

def string_tokens(l):
    result = list()
    for s in l:
        token = str()
        for c in s:
            token += "N" if is_number(c) else "A" if is_alpha(c) else "S" if is_white(c) else "-"
        result.append(token)
    return list(set(result))

def group_tokens(l):
    r = list()
    for s in l:
        i = 0
        x = 0
        o = s[0]
        t = list()
        for c in s:
            if c != o:
                t.append(s[x : i])
                x = i
            i += 1
            o = c
        if x != i:
            t.append(s[x:])
        r.append(t)
    return r