transformers

6d585fe0 - replace assert with exception for padding_side arg in `PreTrainedTokenizerBase` `__init__` (#15454)

replace assert with exception for padding_side arg in `PreTrainedTokenizerBase` `__init__` (#15454) * replace assert with exception for `padding_side` arg in `PreTrainedTokenizerBase` `__init__` * add test * fix kwargs * reformat test * format * format * fix typo to render the documentation