Added respect for inherited signatures in S3File.open()

Updated return type from File to S3File

django_minio_backend/models.py

@@ -56,10 +56,10 @@ def __init__(self, file, name, storage):
         super().__init__(file, name)
         self._storage = storage
 
-    def open(self, mode=None):
+    def open(self, mode=None, *args, **kwargs):
         if self.closed:
             self.file = self._storage.open(self.name, mode or "rb").file
-        return super().open(mode)
+        return super().open(mode, *args, **kwargs)
 
 
 @deconstructible
@@ -189,7 +189,7 @@ def get_available_name(self, name, max_length=None):
             return name
         return super(MinioBackend, self).get_available_name(name, max_length)
 
-    def _open(self, object_name, mode='rb', **kwargs) -> File:
+    def _open(self, object_name, mode='rb', **kwargs) -> S3File:
         """
         Implements the Storage._open(name,mode='rb') method
         :param name (str): object_name [path to file excluding bucket name which is implied]
@@ -200,7 +200,7 @@ def _open(self, object_name, mode='rb', **kwargs) -> File:
         if mode != 'rb':
             raise ValueError('Files retrieved from MinIO are read-only. Use save() method to override contents')
         try:
-            resp = self.client.get_object(self.bucket, object_name, kwargs)
+            resp = self.client.get_object(self.bucket, object_name, **kwargs)
             file = S3File(file=io.BytesIO(resp.read()), name=object_name, storage=self)
         finally:
             resp.close()