thanks gemini

Author: kevinjqliu

pyiceberg/io/fsspec.py

@@ -208,24 +208,20 @@ def _adls(properties: Properties) -> AbstractFileSystem:
             properties[ADLS_SAS_TOKEN] = sas_token
 
     class StaticTokenCredential(AsyncTokenCredential):
+        _DEFAULT_EXPIRY_SECONDS = 3600
+
         def __init__(self, token_string: str) -> None:
             self._token = token_string
-            # If no expiry provided, set 1 hour from now
-            self._expires_on = int(time.time()) + 3600
+            # Set expiration 1 hour from now
+            self._expires_on = int(time.time()) + self._DEFAULT_EXPIRY_SECONDS
 
         async def get_token(self, *scopes: str, **kwargs: Any) -> AccessToken:
             return AccessToken(self._token, self._expires_on)
 
-    if ADLS_TOKEN in properties:
-        token = properties.get(ADLS_TOKEN)
-        if token is not None:
-            credential = StaticTokenCredential(token)
-        else:
-            credential = None
-    elif ADLS_CREDENTIAL in properties:
-        credential = properties.get(ADLS_CREDENTIAL)
+    if token := properties.get(ADLS_TOKEN):
+        credential = StaticTokenCredential(token)
     else:
-        credential = None
+        credential = properties.get(ADLS_CREDENTIAL)  # type: ignore
 
     return AzureBlobFileSystem(
         connection_string=properties.get(ADLS_CONNECTION_STRING),