Create data_fetcher.py

data_fetcher.py

@@ -0,0 +1,13 @@
+import pandas as pd
+
+def get_hydrogen_data():
+    """
+    Simulates fetching data from an open-source model.
+    Reads local dataset electrolysis_data.csv as a fallback.
+    """
+    try:
+        df = pd.read_csv("electrolysis_data.csv")
+        return df
+    except Exception as e:
+        print(f"⚠️ Error loading dataset: {e}")
+        return None