diff --git a/adlfs/spec.py b/adlfs/spec.py
index db17e81c..513882de 100644
--- a/adlfs/spec.py
+++ b/adlfs/spec.py
@@ -1841,9 +1841,10 @@ def _open(
             cache_type=cache_type,
             metadata=metadata,
             version_id=version_id,
-           **kwargs,
+            **kwargs,
         )
 
+
 class AzureBlobFile(AbstractBufferedFile):
     """File-like operations on Azure Blobs"""
 
@@ -1915,7 +1916,7 @@ def __init__(
             else None
         )
 
-        self.loop = self._get_loop() 
+        self.loop = self._get_loop()
         self.container_client = self._get_container_client()
         self.blocksize = (
             self.DEFAULT_BLOCK_SIZE if block_size in ["default", None] else block_size
@@ -2187,13 +2188,13 @@ def __del__(self):
                 self.close()
         except TypeError:
             pass
-    
+
     def __getstate__(self):
         state = self.__dict__.copy()
-        del state['container_client']
-        del state['loop']
+        del state["container_client"]
+        del state["loop"]
         return state
-    
+
     def __setstate__(self, state):
         self.__dict__.update(state)
         self.loop = self._get_loop()
diff --git a/adlfs/tests/test_pickling.py b/adlfs/tests/test_pickling.py
index 5bcb41da..4e46d14f 100644
--- a/adlfs/tests/test_pickling.py
+++ b/adlfs/tests/test_pickling.py
@@ -1,31 +1,32 @@
 import pickle
-import pytest
-from adlfs import AzureBlobFileSystem, AzureBlobFile
-import asyncio
+
+from adlfs import AzureBlobFileSystem
 
 URL = "http://127.0.0.1:10000"
 ACCOUNT_NAME = "devstoreaccount1"
 KEY = "Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw=="  # NOQA
 CONN_STR = f"DefaultEndpointsProtocol=http;AccountName={ACCOUNT_NAME};AccountKey={KEY};BlobEndpoint={URL}/{ACCOUNT_NAME};"  # NOQA
 
+
 def test_fs_pickling(storage):
     fs = AzureBlobFileSystem(
         account_name=storage.account_name,
         connection_string=CONN_STR,
-        kwarg1= "some_value",
+        kwarg1="some_value",
     )
-    fs2 : AzureBlobFileSystem = pickle.loads(pickle.dumps(fs))
+    fs2: AzureBlobFileSystem = pickle.loads(pickle.dumps(fs))
     assert "data" in fs.ls("")
     assert "data" in fs2.ls("")
     assert fs2.kwargs["kwarg1"] == "some_value"
 
+
 def test_blob_pickling(storage):
     fs = AzureBlobFileSystem(
         account_name=storage.account_name, connection_string=CONN_STR
     )
-    fs2 : AzureBlobFileSystem = pickle.loads(pickle.dumps(fs))
+    fs2: AzureBlobFileSystem = pickle.loads(pickle.dumps(fs))
     blob = fs2.open("data/root/a/file.txt")
     assert blob.read() == b"0123456789"
     blob2 = pickle.loads(pickle.dumps(blob))
     blob2.seek(0)
-    assert blob2.read() == b"0123456789"
\ No newline at end of file
+    assert blob2.read() == b"0123456789"