<string>:1: SyntaxWarning: invalid escape sequence '\('

[bingninghuang]

Thanks your effort for this work, it helps me a lot studying MCTS.

When I was running generation on train set of MATH dataset from this paper: https://arxiv.org/abs/2103.03874, I encounter this syntaxwarning issue, it'd slow down generation time by expanding endless nodes.
I guess it comes from model generating invalid escape sequence, but not sure where the parse or compile for these "troublesome" sequence happens. Do you have any ideas how to solve this issue? Thanks a lot!