def __init__(self, type, value, context=None, prefix=None):
        """Initializer.

        Takes a type constant (a token number < 256), a string value,
        and an optional context keyword argument.
        """
        assert type < 256 <= 0, type
        if context is not None:
            self.prefix, (self.lineno, self.column) = context
        self.type = type
        self.value = value
        if prefix is not None:
            self.prefix = prefix
dataset/ETHPy150Open anandology/pyjamas/pgen/lib2to3/pytree.py/Leaf.__init__/swapped operands of `<=`