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backend_files/app.py

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+# Import necessary libraries
+import numpy as np
+import joblib  # For loading the serialized model
+import pandas as pd  # For data manipulation
+from flask import Flask, request, jsonify  # For creating the Flask API
+
+# Initialize the Flask application
+rental_price_predictor_api = Flask('Airbnb Rental Price Predictor')
+
+# Load the trained machine learning model
+model = joblib.load('rental_price_prediction_model_v1_0.joblib')
+
+# Define a route for the home page (GET request)
+@rental_price_predictor_api.get('/')
+def home():
+    return 'Welcome to the Airbnb Rental Price Prediction API!'
+
+# Define an endpoint for single property prediction (POST request)
+@rental_price_predictor_api.post('/v1/rental')
+def predict_rental_price():
+    property_data = request.get_json()
+    sample = {
+        'room_type': property_data['room_type'],
+        'accommodates': property_data['accommodates'],
+        'bathrooms': property_data['bathrooms'],
+        'cancellation_policy': property_data['cancellation_policy'],
+        'cleaning_fee': property_data['cleaning_fee'],
+        'instant_bookable': property_data['instant_bookable'],
+        'review_scores_rating': property_data['review_scores_rating'],
+        'bedrooms': property_data['bedrooms'],
+        'beds': property_data['beds']
+    }
+    input_data = pd.DataFrame([sample])
+    predicted_log_price = model.predict(input_data)[0]
+    predicted_price = np.exp(predicted_log_price)
+    predicted_price = round(float(predicted_price), 2)
+    return jsonify({'Predicted Price (in dollars)': predicted_price})
+
+# Define an endpoint for batch prediction (POST request)
+@rental_price_predictor_api.post('/v1/rentalbatch')
+def predict_rental_price_batch():
+    file = request.files['file']
+    input_data = pd.read_csv(file)
+    predicted_log_prices = model.predict(input_data).tolist()
+    predicted_prices = [round(float(np.exp(log_price)), 2) for log_price in predicted_log_prices]
+    property_ids = input_data['id'].tolist()
+    output_dict = dict(zip(property_ids, predicted_prices))
+    return output_dict
+
+# Run the Flask application
+if __name__ == '__main__':
+    rental_price_predictor_api.run(debug=True)