From 7c94e90f64147369c06174b050bfc0faab7516d8 Mon Sep 17 00:00:00 2001
From: Seb Bacon <seb.bacon@gmail.com>
Date: Thu, 9 May 2019 11:57:39 +0100
Subject: [PATCH] Support empty lists of US locations

---
 clinicaltrials/frontend/management/commands/load_data.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/clinicaltrials/frontend/management/commands/load_data.py b/clinicaltrials/frontend/management/commands/load_data.py
index fbebc9a..bcaa70b 100644
--- a/clinicaltrials/frontend/management/commands/load_data.py
+++ b/clinicaltrials/frontend/management/commands/load_data.py
@@ -283,9 +283,10 @@ def has_us_loc(locs):
         "Puerto Rico",
         "Virgin Islands (U.S.)",
     ]
-    for us_loc in us_locs:
-        if us_loc in locs:
-            return True
+    if locs:
+        for us_loc in us_locs:
+            if us_loc in locs:
+                return True
     return False