Allow saving to BytesIO (#596)

holoviz · Sep 17, 2019 · ff4fdc7 · ff4fdc7
1 parent 2c42e23
commit ff4fdc7
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/panel/io/save.py b/panel/io/save.py
@@ -104,7 +104,10 @@ def save(panel, filename, title=None, resources=None, template=None,
 
     html = file_html(doc, resources, title, **kwargs)
     if hasattr(filename, 'write'):
-        filename.write(decode_utf8(html))
+        html = decode_utf8(html)
+        if isinstance(filename, io.BytesIO):
+            html = html.encode('utf-8')
+        filename.write(html)
         return
     with io.open(filename, mode="w", encoding="utf-8") as f:
         f.write(decode_utf8(html))