def key_value_to_tree(data):
    '''
    Convert key/value to tree
    '''
    tree = {}
    for flatkey, value in six.iteritems(data):
        t = tree
        keys = flatkey.split(__opts__['pepa_delimiter'])
        for i, key in enumerate(keys, 1):
            if i == len(keys):
                t[key] = value
            else:
                t = t.setdefault(key, {})
    return tree