diff --git a/.gitignore b/.gitignore
index 73fe5274..20819124 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,5 @@ pip-wheel-metadata
 *.so
 /bindings/python/build
 /bindings/python/dist
+
+.vscode
\ No newline at end of file
diff --git a/bindings/python/tokenizers/implementations/base_tokenizer.py b/bindings/python/tokenizers/implementations/base_tokenizer.py
index 8a7d8854..e34bb075 100644
--- a/bindings/python/tokenizers/implementations/base_tokenizer.py
+++ b/bindings/python/tokenizers/implementations/base_tokenizer.py
@@ -1,6 +1,6 @@
-from .tokenizers import Tokenizer
+from ..tokenizers import Tokenizer, Encoding
 
-from typing import List, Union, Tuple
+from typing import List, Union, Tuple, Optional
 
 class BaseTokenizer:
     _tokenizer: Tokenizer
diff --git a/bindings/python/tokenizers/implementations/byte_level_bpe.py b/bindings/python/tokenizers/implementations/byte_level_bpe.py
index aceee62e..1e5655a4 100644
--- a/bindings/python/tokenizers/implementations/byte_level_bpe.py
+++ b/bindings/python/tokenizers/implementations/byte_level_bpe.py
@@ -1,7 +1,7 @@
 from tokenizers import Tokenizer, pre_tokenizers, decoders
-from tokenizers.tokenizers import BaseTokenizer
 from tokenizers.models import BPE
 from tokenizers.normalizers import NFKC
+from .base_tokenizer import BaseTokenizer
 
 from typing import Optional
 
@@ -14,7 +14,7 @@ class ByteLevelBpe(BaseTokenizer):
     def __init__(self,
                  vocab_file: Optional[str]=None,
                  merges_file: Optional[str]=None,
-                 add_prefix_space: boolean=False):
+                 add_prefix_space: bool=False):
         if vocab_file is not None and merges_file is not None:
             tokenizer = Tokenizer(BPE.from_files(vocab_file, merges_file))
         else: