fix style

.flake8

@@ -5,6 +5,7 @@ max-line-length = 80
 per-file-ignores =
     # line too long
     egs/librispeech/ASR/*/conformer.py: E501,
+    egs/aishell/ASR/*/conformer.py: E501,
 
 exclude =
   .git,

egs/aishell/ASR/local/compute_fbank_aishell.py

@@ -107,4 +107,3 @@ if __name__ == "__main__":
 
     args = get_args()
     compute_fbank_aishell(num_mel_bins=args.num_mel_bins)
-

egs/aishell/ASR/local/compute_fbank_musan.py

@@ -87,6 +87,7 @@ def compute_fbank_musan(num_mel_bins: int = 80):
         )
         musan_cuts.to_json(musan_cuts_path)
 
+
 def get_args():
     parser = argparse.ArgumentParser()
     parser.add_argument(

egs/aishell/ASR/local/prepare_char.py

@@ -33,10 +33,9 @@ and generates the following files in the directory `lang_dir`:
     - tokens.txt
 """
 
-import argparse
 import re
 from pathlib import Path
-from typing import Dict, List, Tuple
+from typing import Dict, List
 
 import k2
 import torch

icefall/decode.py

@@ -903,4 +903,3 @@ def rescore_with_attention_decoder(
             key = f"ngram_lm_scale_{n_scale}_attention_scale_{a_scale}"
             ans[key] = best_path
     return ans
-