Better error messaging

getnikola · May 28, 2017 · 03b285f · 03b285f
1 parent 7672b57
commit 03b285f
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/nikola/post.py b/nikola/post.py
@@ -1030,7 +1030,8 @@ def _get_metadata_from_file(meta_data):
     # If 1st line is '---', then it's YAML metadata
     if meta_data[0] == '---':
         if yaml is None:
-            utils.req_missing('pyyaml', 'use YAML metadata')
+            utils.req_missing('pyyaml', 'use YAML metadata', optional=True)
+            raise ValueError('Error parsing metadata')
         idx = meta_data.index('---', 1)
         meta = yaml.load('\n'.join(meta_data[1:idx]))
         # We expect empty metadata to be '', not None