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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
import os
from flask import Flask, request, jsonify # For creating the Flask API
# Initialize the Flask application
revenue_predictor_api = Flask("Revenue Predictor")
# Load the trained machine learning model
#model = joblib.load("revenue_prediction_model_v1_0.joblib")
model = joblib.load(os.path.join(os.path.dirname(__file__), "revenue_prediction_model_v1_0.joblib"))
print("Model loaded successfully!")
# Define a route for the home page (GET request)
@revenue_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 Revenue Prediction API!"
# Define an endpoint for single product revenue prediction (POST request)
@revenue_predictor_api.post('/v1/revenue')
def predict_revenue():
"""
This function handles POST requests to the '/v1/revenue' 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 = {
'Product_Weight': property_data['Product_Weight'],
'Product_Sugar_Content': property_data['Product_Sugar_Content'],
'Product_Allocated_Area': property_data['Product_Allocated_Area'],
'Product_Type': property_data['Product_Type'],
'Product_MRP': property_data['Product_MRP'],
'Store_Id': property_data['Store_Id'],
'Store_Establishment_Year': property_data['Store_Establishment_Year'],
'Store_Size': property_data['Store_Size'],
'Store_Location_City_Type': property_data['Store_Location_City_Type'],
'Store_Type': property_data['Store_Type']
}
# Convert the extracted data into a Pandas DataFrame
input_data = pd.DataFrame([sample])
# Make prediction (get sales_total)
predicted_sales_total = model.predict(input_data)[0]
# Calculate actual sales
predicted_total = np.exp(predicted_sales_total)
# Convert predicted_total to Python float
predicted_total = round(float(predicted_total), 2)
# The conversion above is needed as we convert the model prediction (sales_total) to actual sales 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 sales
return jsonify({'Predicted Sales Total (in dollars)': predicted_total})
# Run the Flask application in debug mode if this script is executed directly
if __name__ == '__main__':
#revenue_predictor_api.run(debug=True)
port = int(os.environ.get("PORT", 7860)) # Hugging Face provides PORT
revenue_predictor_api.run(host="0.0.0.0", port=port, debug=True)
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