Simplify conditions on len() in providers/microsoft (#33566)

airflow/providers/microsoft/azure/hooks/cosmos.py

@@ -153,7 +153,7 @@ def does_collection_exist(self, collection_name: str, database_name: str) -> boo
                 parameters=[json.dumps({"name": "@id", "value": collection_name})],
             )
         )
-        if len(existing_container) == 0:
+        if not existing_container:
             return False
 
         return True
@@ -180,7 +180,7 @@ def create_collection(
         )
 
         # Only create if we did not find it already existing
-        if len(existing_container) == 0:
+        if not existing_container:
             self.get_conn().get_database_client(self.__get_database_name(database_name)).create_container(
                 collection_name, partition_key=partition_key
             )
@@ -196,7 +196,7 @@ def does_database_exist(self, database_name: str) -> bool:
                 parameters=[json.dumps({"name": "@id", "value": database_name})],
             )
         )
-        if len(existing_database) == 0:
+        if not existing_database:
             return False
 
         return True
@@ -216,7 +216,7 @@ def create_database(self, database_name: str) -> None:
         )
 
         # Only create if we did not find it already existing
-        if len(existing_database) == 0:
+        if not existing_database:
             self.get_conn().create_database(database_name)
 
     def delete_database(self, database_name: str) -> None:

airflow/providers/microsoft/azure/hooks/wasb.py

@@ -241,7 +241,7 @@ def check_for_prefix(self, container_name: str, prefix: str, **kwargs) -> bool:
         :return: True if blobs matching the prefix exist, False otherwise.
         """
         blobs = self.get_blobs_list(container_name=container_name, prefix=prefix, **kwargs)
-        return len(blobs) > 0
+        return bool(blobs)
 
     def get_blobs_list(
         self,
@@ -502,7 +502,7 @@ def delete_file(
             blobs_to_delete = [blob_name]
         else:
             blobs_to_delete = []
-        if not ignore_if_missing and len(blobs_to_delete) == 0:
+        if not ignore_if_missing and not blobs_to_delete:
             raise AirflowException(f"Blob(s) not found: {blob_name}")
 
         # The maximum number of blobs that can be deleted in a single request is 256 using the underlying
@@ -683,4 +683,4 @@ async def check_for_prefix_async(self, container_name: str, prefix: str, **kwarg
         :param kwargs: Optional keyword arguments for ``ContainerClient.walk_blobs``
         """
         blobs = await self.get_blobs_list_async(container_name=container_name, prefix=prefix, **kwargs)
-        return len(blobs) > 0
+        return bool(blobs)