From 606df136a7f9b28f468a9add3d9212423c852619 Mon Sep 17 00:00:00 2001
From: David Jose Florez Rodriguez
 <59715727+DavidLikesLearning@users.noreply.github.com>
Date: Tue, 2 Jun 2026 17:09:18 -0400
Subject: [PATCH 1/2] clean incomplete emissions constraint handler

fixing bug #331
---
 temoa/components/limits.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/temoa/components/limits.py b/temoa/components/limits.py
index f7f5d5d9c..4f8fcfc30 100644
--- a/temoa/components/limits.py
+++ b/temoa/components/limits.py
@@ -941,7 +941,7 @@ def limit_emission_constraint(
     # in the case that there is nothing to sum, skip
     if isinstance(expr, bool):  # an empty list was generated
         msg = "Warning: No technology produces emission '%s', though limit was specified as %s.\n"
-        logger.warning(msg, (e, emission_limit))
+        logger.warning(msg % (e, emission_limit))
         sys.stderr.write(msg % (e, emission_limit))
         return Constraint.Skip
 

From 2e082e28b429007f7a18e4571921ec3be52b44b8 Mon Sep 17 00:00:00 2001
From: David Jose Florez Rodriguez
 <59715727+DavidLikesLearning@users.noreply.github.com>
Date: Tue, 2 Jun 2026 18:54:08 -0400
Subject: [PATCH 2/2] Fix logger to preferred style

avoids string interpolation just in case
---
 temoa/components/limits.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/temoa/components/limits.py b/temoa/components/limits.py
index 4f8fcfc30..7fa6bf02c 100644
--- a/temoa/components/limits.py
+++ b/temoa/components/limits.py
@@ -941,7 +941,7 @@ def limit_emission_constraint(
     # in the case that there is nothing to sum, skip
     if isinstance(expr, bool):  # an empty list was generated
         msg = "Warning: No technology produces emission '%s', though limit was specified as %s.\n"
-        logger.warning(msg % (e, emission_limit))
+        logger.warning(msg, e, emission_limit)
         sys.stderr.write(msg % (e, emission_limit))
         return Constraint.Skip