Create app.py

app.py

@@ -0,0 +1,40 @@
+from flask import Flask, request, jsonify, render_template
+
+app = Flask(__name__)
+
+# SIP Calculation Function
+def calculate_sip(P, i, n):
+    M = P * (((1 + i) ** n - 1) / i) * (1 + i)
+    return M
+
+# REST API Endpoint for SIP Calculation
+@app.route('/api/sip', methods=['POST'])
+def sip_api():
+    try:
+        data = request.json  # Get JSON request data
+        P = float(data.get("P", 5000))  # Default: 5000
+        i = float(data.get("i", 12))  # Default: 12% annual
+        n = int(data.get("n", 10))  # Default: 10 years
+
+        # Convert annual interest rate to monthly and decimal
+        monthly_rate = i / 12 / 100
+        n_payments = n * 12
+
+        M = calculate_sip(P, monthly_rate, n_payments)
+        total_invested = P * n_payments
+        estimated_returns = M - total_invested
+
+        return jsonify({
+            "monthly_investment": P,
+            "annual_interest_rate": i,
+            "years": n,
+            "final_amount": M,
+            "total_invested": total_invested,
+            "estimated_returns": estimated_returns
+        })
+
+    except Exception as e:
+        return jsonify({"error": str(e)}), 400  # Return error in JSON format
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=5000, debug=True)