Replace "assert" with ValueError

* wqflask/wqflask/api/mapping.py (do_mapping_for_api): Raise a
ValueError if 'db' and 'trait_id' or not present in 'start_vars'
instead of doing an "assert".

1 files changed, 2 insertions, 2 deletions

diff --git a/wqflask/wqflask/api/mapping.py b/wqflask/wqflask/api/mapping.py
index 94e37161..0a23457e 100644
--- a/wqflask/wqflask/api/mapping.py
+++ b/wqflask/wqflask/api/mapping.py
@@ -5,8 +5,8 @@ from wqflask.marker_regression import gemma_mapping, rqtl_mapping
 from wqflask.show_trait.show_trait import normf
 
 def do_mapping_for_api(start_vars):
-    assert('db' in start_vars)
-    assert('trait_id' in start_vars)
+    if ('db' not in start_vars) or ("trait_id" not in start_vars):
+        raise ValueError("Mapping: db and trait_id are not in start_vars")
 
     dataset = data_set.create_dataset(dataset_name=start_vars['db'])
     dataset.group.get_markers()