Update app.py

app.py

@@ -1,35 +1,42 @@
 import gradio as gr
 import matplotlib.pyplot as plt
 
+# Helper function to format INR values
+def format_rupees(value):
+    inr = f"₹ {value:,.2f}"
+    if value >= 1e7:
+        cr = f" (₹ {value / 1e7:.2f} Cr)"
+        return inr + cr
+    return inr
+
 def cmda_redevelopment_final_model(
     uds, num_owners, total_fsi, guideline_value, market_rate, construction_cost
 ):
-    # Constants
     owner_fsi = 2.0
     premium_fsi = total_fsi - owner_fsi
 
-    # Step 1: Area calculations
+    # Area calculations
     owner_total_area = owner_fsi * uds
     builder_area = premium_fsi * uds
     total_built_up_area = total_fsi * uds
 
-    # Step 2: Premium FSI Charges (new formula)
+    # Premium FSI Charges
     premium_fsi_charge = 0.4 * guideline_value * uds * premium_fsi
 
-    # Step 3: Construction cost for entire built-up area
+    # Construction cost for entire built-up area
     total_construction_cost = total_built_up_area * construction_cost
 
-    # Step 4: Builder Revenue (saleable area = premium portion only)
+    # Builder Revenue
     builder_sale_value = builder_area * market_rate
 
-    # Step 5: Builder Profit
+    # Builder Profit
     builder_profit = builder_sale_value - total_construction_cost - premium_fsi_charge
 
-    # Step 6: Owner Share Calculations
+    # Owner share
     uds_per_owner = uds / num_owners
     owner_area_per_owner = owner_total_area / num_owners
 
-    # Step 7: Chart
+    # Chart
     fig, ax = plt.subplots(figsize=(6, 4))
     labels = ['Owner Area (2.0x UDS)', f'Builder Area ({premium_fsi:.1f}x UDS)', 'Total Area']
     values = [owner_total_area, builder_area, total_built_up_area]
@@ -38,7 +45,7 @@ def cmda_redevelopment_final_model(
     ax.set_title("Redevelopment Share Breakdown")
     plt.tight_layout()
 
-    # Step 8: Output
+    # Output with formatted rupees
     result = {
         "Total UDS": f"{uds:.2f} sq.ft",
         "Total Built-up Area (FSI × UDS)": f"{total_built_up_area:.2f} sq.ft",
@@ -46,10 +53,10 @@ def cmda_redevelopment_final_model(
         f"Builder Saleable Area ({premium_fsi:.1f} × UDS)": f"{builder_area:.2f} sq.ft",
 
         "--- Builder Financials ---": "",
-        "Premium FSI Charges (0.4 × guideline × UDS × extra FSI)": f"₹ {premium_fsi_charge:,.2f}",
-        "Total Construction Cost (entire built-up area)": f"₹ {total_construction_cost:,.2f}",
-        "Builder Revenue (@ market rate)": f"₹ {builder_sale_value:,.2f}",
-        "Estimated Builder Profit": f"₹ {builder_profit:,.2f}",
+        "Premium FSI Charges (0.4 × guideline × UDS × extra FSI)": format_rupees(premium_fsi_charge),
+        "Total Construction Cost (entire built-up area)": format_rupees(total_construction_cost),
+        "Builder Revenue (@ market rate)": format_rupees(builder_sale_value),
+        "Estimated Builder Profit": format_rupees(builder_profit),
 
         "--- Owner Breakdown ---": "",
         "Number of Owners": num_owners,
@@ -59,7 +66,7 @@ def cmda_redevelopment_final_model(
 
     return result, fig
 
-# Gradio Inputs and Outputs
+# Gradio Interface
 inputs = [
     gr.Number(label="Total UDS (in sq.ft)", value=450),
     gr.Number(label="Number of Owners", value=4),
@@ -74,15 +81,14 @@ outputs = [
     gr.Plot(label="Redevelopment Share Chart")
 ]
 
-# Interface setup
 app = gr.Interface(
     fn=cmda_redevelopment_final_model,
     inputs=inputs,
     outputs=outputs,
     title="CMDA Redevelopment Calculator (Fixed Owner FSI Model)",
     description=(
-        "This calculator assumes flat owners receive 2.0× their UDS as new flats. Builder retains only the premium FSI portion "
-        "and pays for full construction and premium FSI charges. Enter realistic values to assess feasibility."
+        "Owners receive flats at 2.0× their UDS. Builder gets only the premium FSI share, sells at market rate, "
+        "and bears full construction cost and premium FSI charges. Figures over ₹1 Cr are shown in crores."
     )
 )