From 08a937631da94c8158068072d2ce2346c29e9cbe Mon Sep 17 00:00:00 2001
From: Munyoki Kilyungi
Date: Thu, 8 Sep 2022 14:20:30 +0300
Subject: Replace "asserts" with ValueErrors

* wqflask/wqflask/api/correlation.py (do_correlation): Raise a
ValueError if variables are not in the start_vars.
---
 wqflask/wqflask/api/correlation.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/wqflask/wqflask/api/correlation.py b/wqflask/wqflask/api/correlation.py
index ab1e772a..9fafc881 100644
--- a/wqflask/wqflask/api/correlation.py
+++ b/wqflask/wqflask/api/correlation.py
@@ -8,9 +8,12 @@ from wqflask.correlation import correlation_functions
 from wqflask.database import database_connection
 
 def do_correlation(start_vars):
-    assert('db' in start_vars)
-    assert('target_db' in start_vars)
-    assert('trait_id' in start_vars)
+    if 'db' not in start_vars:
+        raise ValueError("'db' not found!")
+    if 'target_db' not in start_vars:
+        raise ValueError("'target_db' not found!")
+    if 'trait_id' not in start_vars:
+        raise ValueError("'trait_id' not found!")
 
     this_dataset = data_set.create_dataset(dataset_name=start_vars['db'])
     target_dataset = data_set.create_dataset(
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