fix formatting issues

egs/reazonspeech/ASR/zipformer/streaming_decode.py

@@ -22,13 +22,15 @@ Usage:
 
 """
 
-import pdb
 import argparse
 import logging
 import math
+import os
+import pdb
+
+# import subprocess as sp
 from pathlib import Path
 from typing import Dict, List, Optional, Tuple
-from tokenizer import Tokenizer
 
 import k2
 import numpy as np
@@ -42,6 +44,7 @@ from streaming_beam_search import (
     greedy_search,
     modified_beam_search,
 )
+from tokenizer import Tokenizer
 from torch import Tensor, nn
 from torch.nn.utils.rnn import pad_sequence
 from train import add_model_arguments, get_model, get_params
@@ -61,9 +64,6 @@ from icefall.utils import (
     write_error_stats,
 )
 
-import subprocess as sp
-import os
-
 LOG_EPS = math.log(1e-10)
 
 
@@ -633,7 +633,6 @@ def decode_dataset(
             print("No finished streams, breaking the loop")
             break
 
-    
         for i in sorted(finished_streams, reverse=True):
             try:
                 decode_results.append(