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-rw-r--r--fatcat_scholar/sim_pipeline.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/fatcat_scholar/sim_pipeline.py b/fatcat_scholar/sim_pipeline.py
index 4315e70..c96681a 100644
--- a/fatcat_scholar/sim_pipeline.py
+++ b/fatcat_scholar/sim_pipeline.py
@@ -64,7 +64,9 @@ class SimPipeline():
leaf_index = dict()
leaf_list = []
- assert 'page_numbers' in issue_meta
+ if not 'page_numbers' in issue_meta:
+ # TODO: warn
+ return None
for entry in issue_meta['page_numbers'].get('pages', []):
page_num = entry['pageNumber']
leaf_index[entry['leafNum']] = page_num