chunk_content: r function with DataCollatorWithPadding to pad the examples in the batches to the longest sequence in the batch:
  
  
  	Copied
  data_collator = DataCollatorWithPadding(tokenizer=tokenizer, padding="longest")
  
  Train
  	
  P-tuning uses a prompt encoder to optimize the prompt parameters, so you’ll need to initialize the PromptEncoderConfig with several arguments:
  task_type: the type of task you’re training on, in this case it is sequence classification or