Update src/streamlit_app.py

src/streamlit_app.py

@@ -49,6 +49,9 @@ weight_kg = st.number_input(
     format="%.2f"
 )
 
+# =========================
+# BMI Calculation
+# =========================
 # =========================
 # BMI Calculation
 # =========================
@@ -56,7 +59,7 @@ def calculate_bmi(height_cm, weight_kg):
     if height_cm > 0 and weight_kg > 0:
         height_m = height_cm / 100
         return weight_kg / (height_m ** 2)
-    return None
+    return 0   # Always return something
 
 def bmi_category(bmi):
     if bmi < 18.5:
@@ -68,13 +71,12 @@ def bmi_category(bmi):
     else:
         return "Obese"
 
-bmi = calculate_bmi(height_cm, weight_kg)
-
-# Show BMI instantly when values are entered
-if bmi:
+# ALWAYS define bmi safely
+bmi = 0
+if height_cm > 0 and weight_kg > 0:
+    bmi = calculate_bmi(height_cm, weight_kg)
     st.info(f"Your BMI is: {bmi:.2f} ({bmi_category(bmi)})")
 
-st.markdown("---")
 
 # =========================
 # 2️⃣ Fitness Details