Merge pull request #27500 from nate-chandler/scurve-avoid-zero-division

Author: swift-ci

utils/dev-scripts/csvcolumn_to_scurve.py

@@ -14,7 +14,10 @@ def get_selected_csv_rows(input_file, before_column, after_column):
         for row in csv.DictReader(input_file):
             before = float(row[before_column])
             after = float(row[after_column])
-            delta = after / before
+            if before > 0:
+                delta = after / before
+            else:
+                delta = 1
             yield delta
 
     def f(input_data):