From abd4ed586893f840aa41ef0b8bdc304736e54c20 Mon Sep 17 00:00:00 2001
From: robjmcgibbon <robjmcgibbon@gmail.com>
Date: Tue, 8 Oct 2024 12:24:08 +0200
Subject: [PATCH] Update mass table initialisation

---
 swiftsimio/metadata/objects.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/swiftsimio/metadata/objects.py b/swiftsimio/metadata/objects.py
index b47a7938..db0cdcec 100644
--- a/swiftsimio/metadata/objects.py
+++ b/swiftsimio/metadata/objects.py
@@ -377,7 +377,9 @@ def __init__(self, base_mass_table: np.array, mass_units: unyt.unyt_quantity):
 
         # TODO: Extract these names from the files themselves if possible.
 
-        for index, name in metadata.particle_types.particle_name_underscores.items():
+        for index, name in enumerate(
+            metadata.particle_types.particle_name_underscores.values()
+        ):
             try:
                 setattr(
                     self,