From 716ef19c8a3ea1e38a9af850f7aafbc73e36b0d4 Mon Sep 17 00:00:00 2001
From: tbuckworth <55180288+tbuckworth@users.noreply.github.com>
Date: Thu, 22 Aug 2024 10:26:35 +0100
Subject: [PATCH] added warning to missing parameters in from_file

---
 pysr/sr.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pysr/sr.py b/pysr/sr.py
index 590f6030..3c0e796b 100644
--- a/pysr/sr.py
+++ b/pysr/sr.py
@@ -1025,6 +1025,13 @@ def from_file(
                 and v.kind != v.VAR_KEYWORD
             }
 
+            if len(missing_params) > 0:
+                warnings.warn(
+                    "The following missing parameters will be assigned with default values:"
+                    f"{', '.join(missing_params.keys())}"
+                    "This may be due to the model being saved under an old package version."
+                )
+
             # Assign missing attributes
             for k, v in missing_params.items():
                 setattr(model, k, v)