class BTree:

    def __init__(self, data, left=None, right=None):
        self._data = data
        self._left = left
        self._right = right

768c98eebc4c0f57729be5eb13e0fb7dc3702762
<mask token>

class BTree:
    <mask token>

class BTree:

    def __init__(self, data, left=None, right=None):
        self._data = data
        self._left = left
        self._right = right
