From afc5f7f9eff5420ad1a025bf9117715a7f1c9e52 Mon Sep 17 00:00:00 2001
From: Noe Brucy <noe.brucy@cea.fr>
Date: Wed, 5 Apr 2023 16:59:40 +0200
Subject: [PATCH] improve io checks

---
 utils/runselector.py | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/utils/runselector.py b/utils/runselector.py
index bb0f372..a3211be 100644
--- a/utils/runselector.py
+++ b/utils/runselector.py
@@ -416,6 +416,9 @@ class RunSelector:
 
         nums.sort()
 
+        if len(nums) == 0:
+            return []
+
         # --  Select either the first or last output from the list, or all the valid ones --
         if in_nums == "first":
             i = 0
@@ -424,7 +427,7 @@ class RunSelector:
             if i < len(nums):
                 nums = [nums[i]]
             else:
-                nums = []
+                return []
         elif in_nums == "last":
             i = len(nums) - 1
             while i >= 0 and not try_load_info(nums[i]):
@@ -432,7 +435,7 @@ class RunSelector:
             if i >= 0:
                 nums = [nums[i]]
             else:
-                nums = []
+                return []
 
         # Be sure we have a namelist
         if self.fallback_nml and run not in self.namelist:
@@ -466,13 +469,13 @@ class RunSelector:
             if imin is not None:
                 nums = nums[imin:]
             else:
-                nums = []
+                return []
         if time_max is not None and len(nums) > 0:
             imax = search(nums, time_max, "left")
             if imax is not None:
                 nums = nums[: imax + 1]
             else:
-                nums = []
+                return []
 
         if time is not None and len(nums) > 0:
             filtered_nums = []