from flax.lexer import tokenise as F
F("[[¯1 1][0 1]]")
[[<TOKEN_TYPE.LIST: 7>, [[<TOKEN_TYPE.LIST: 7>, [[<TOKEN_TYPE.NUMBER: 1>, '¯1'], [<TOKEN_TYPE.NUMBER: 1>, '1']]], [<TOKEN_TYPE.LIST: 7>, [[<TOKEN_TYPE.NUMBER: 1>, '0'], [<TOKEN_TYP
E.NUMBER: 1>, '1']]]]]]