Set cell_marker on first cell with setdefault #107

mwouts · Oct 29, 2018 · c4232b4 · c4232b4
1 parent d03f5f8
commit c4232b4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/jupytext/jupytext.py b/jupytext/jupytext.py
@@ -95,7 +95,7 @@ def writes(self, nb, **kwargs):
 
         for cell in nb.cells:
             if looking_for_first_markdown_cell and cell.cell_type == 'markdown':
-                cell.metadata['cell_marker'] = '"""'
+                cell.metadata.setdefault('cell_marker', '"""')
                 looking_for_first_markdown_cell = False
 
             cell_exporters.append(self.format.cell_exporter_class(