def _truncate_seq_pair(self, tokens_a, tokens_b, max_length):
        """Truncates a sequence pair in place to the maximum length."""
        # This is a simple heuristic which will always truncate the longer sequence
        # one token at a time. This makes more sense than truncating an equal percent
        # of tokens from each, since if one sequence is very short then each token
        # that's truncated likely contains more information than a longer sequence.
        while True:
            total_length = len(tokens_a) + len(tokens_b)
            if total_length <= max_length:
                break
            if len(tokens_a) > len(tokens_b):
                tokens_a.pop()
            else:
                tokens_b.pop()
def _truncate_seq_pair ( self , tokens_a , tokens_b , max_length ) : while True : total_length = len ( tokens_a ) + len ( tokens_b ) if total_length <= max_length : break if len ( tokens_a ) > len ( tokens_b ) : tokens_a . pop ( ) else : tokens_b . pop ( )
Truncates a sequence pair in place to the maximum length.