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Dockerfile

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+FROM python:3.9-slim
+
+# Set the working directory inside the container
+WORKDIR /app
+
+# Copy all files from the current directory to the container's working directory
+COPY . .
+
+# Install dependencies from the requirements file without using cache to reduce image size
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+
+# Define the command to start the application using Gunicorn with 4 worker processes
+# - `-w 4`: Uses 4 worker processes for handling requests
+# - `-b 0.0.0.0:7860`: Binds the server to port 7860 on all network interfaces
+# - `app:app`: Runs the Flask app (assuming `app.py` contains the Flask instance named `app`)
+CMD ["gunicorn", "-w", "4", "-b", "0.0.0.0:7860", "app:rental_price_predictor_api"]

app.py

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+# Import necessary libraries
+import os
+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("Extraa Learn conversion Predictor")
+
+# Load the trained machine learning model
+# Use relative path to load the model inside backend_files
+model_path = os.path.join(os.path.dirname(__file__), "conversion_prediction_model_v1_0.joblib")
+model = joblib.load(model_path)
+
+print("Model loaded successfully.")
+# model = joblib.load(model_path)
+
+# Define a route for the home page (GET request)
+@rental_price_predictor_api.get('/')
+def home():
+    """
+    This function handles GET requests to the root URL ('/') of the API.
+    It returns a simple welcome message.
+    """
+    return "Welcome to the Airbnb Rental Price Prediction API!"
+
+# Define an endpoint for single property prediction (POST request)
+@rental_price_predictor_api.post('/v1/conversion')
+def predict_rental_price():
+    """
+    This function handles POST requests to the '/v1/conversion' endpoint.
+    It expects a JSON payload containing property details and returns
+    the predicted rental price as a JSON response.
+    """
+    # Get the JSON data from the request body
+    property_data = request.get_json()
+
+    # Extract relevant features from the JSON data
+    sample = {
+        'age': property_data['age'],
+        'website_visits': property_data['website_visits'],
+        'time_spent_on_website': property_data['time_spent_on_website'],
+        'page_views_per_visit': property_data['page_views_per_visit'],
+        'current_occupation': property_data['current_occupation'],
+        'first_interaction': property_data['first_interaction'],
+        'profile_completed': property_data['profile_completed'],
+        'last_activity': property_data['last_activity'],
+        'print_media_type1': property_data['print_media_type1'],
+         'print_media_type2': property_data['print_media_type2'],
+        'digital_media': property_data['digital_media'],
+        'educational_channels': property_data['educational_channels'],
+        'referral': property_data['referral']
+    }
+
+    # Convert the extracted data into a Pandas DataFrame
+    input_data = pd.DataFrame([sample])
+
+    # Make prediction (get status_log)
+    status_log = model.predict(input_data)[0]
+
+    # Calculate actual price
+    status = np.exp(status_log)
+    # # Convert status to Python float
+    # status = round(float(status), 2)
+    # The conversion above is needed as we convert the model prediction (log price) to actual price using np.exp, which returns predictions as NumPy float32 values.
+    # When we send this value directly within a JSON response, Flask's jsonify function encounters a datatype error
+
+    # Return the actual price
+    return jsonify({'Predicted status ': status})
+
+# Define an endpoint for batch prediction (POST request)
+@rental_price_predictor_api.post('/v1/conversionbatch')
+def predict_rental_price_batch():
+    """
+    This function handles POST requests to the '/v1/conversionbatch' endpoint.
+    It expects a CSV file containing property details for multiple properties
+    and returns the predicted rental prices as a dictionary in the JSON response.
+    """
+    # Get the uploaded CSV file from the request
+    file = request.files['file']
+
+    # Read the CSV file into a Pandas DataFrame
+    input_data = pd.read_csv(file)
+
+    # Make predictions for all properties in the DataFrame (get log_prices)
+    status_log = model.predict(input_data).tolist()
+
+    # Calculate actual prices
+    status = [round(float(np.exp(log_price)), 2) for log_price in status_log]
+
+    # Create a dictionary of predictions with property IDs as keys
+    property_ids = input_data['ID'].tolist()  # Assuming 'id' is the property ID column
+    output_dict = dict(zip(property_ids, status))  # Use actual prices
+
+    # Return the predictions dictionary as a JSON response
+    return output_dict
+
+# Run the Flask application in debug mode if this script is executed directly
+if __name__ == '__main__':
+    rental_price_predictor_api.run(debug=True)

conversion_prediction_model_v1_0.joblib

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+version https://git-lfs.github.com/spec/v1
+oid sha256:cc1bd21ff520078ab9764e8f46cbfda074e8d9d674b77609274f237ae2ae2487
+size 91927

requirements.txt

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+pandas==2.2.2
+numpy==2.0.2
+scikit-learn==1.6.1
+xgboost==2.1.4
+joblib==1.4.2
+Werkzeug==2.2.2
+flask==2.2.2
+gunicorn==20.1.0
+requests==2.28.1
+uvicorn[standard]
+streamlit==1.43.2