transformers

c53c8e49 - fix "UserWarning: Creating a tensor from a list of numpy.ndarrays is … (#24772)

fix "UserWarning: Creating a tensor from a list of numpy.ndarrays is … (#24772) fix "UserWarning: Creating a tensor from a list of numpy.ndarrays is extremely slow. Please consider converting the list to a single numpy.ndarray with numpy.array() before converting to a tensor." Co-authored-by: 刘长伟 <hzliuchw@corp.netease.com>