app.py

import streamlit as st
import pandas as pd
import joblib

# Load the trained model
def load_model():
    #return joblib.load("/content/drive/MyDrive/Colab Notebooks/ModelDeployment/week1/deployment/churn_prediction_model_v1_0.joblib")
    return joblib.load("churn_prediction_model_v1_0.joblib")

model = load_model()

# Streamlit UI for Customer Churn Prediction
st.title("Customer Churn Prediction App")
st.write("This tool predicts customer churn risk based on their details. Enter the required information below.")

# Collect user input based on dataset columns
Partner = st.selectbox("Does the customer have a partner?", ["Yes", "No"])
Dependents = st.selectbox("Does the customer have dependents?", ["Yes", "No"])
PhoneService = st.selectbox("Does the customer have phone service?", ["Yes", "No"])
InternetService = st.selectbox("Type of Internet Service", ["DSL", "Fiber optic", "No"])
Contract = st.selectbox("Type of Contract", ["Month-to-month", "One year", "Two year"])
PaymentMethod = st.selectbox("Payment Method", ["Electronic check", "Mailed check", "Bank transfer", "Credit card"])
Tenure = st.number_input("Tenure (Months with the company)", min_value=0, value=12)
MonthlyCharges = st.number_input("Monthly Charges", min_value=0.0, value=50.0)
TotalCharges = st.number_input("Total Charges", min_value=0.0, value=600.0)

# Convert categorical inputs to match model training
input_data = pd.DataFrame([{
    'Partner': 1 if Partner == "Yes" else 0,
    'Dependents': 1 if Dependents == "Yes" else 0,
    'PhoneService': 1 if PhoneService == "Yes" else 0,
    'InternetService': InternetService,
    'Contract': Contract,
    'PaymentMethod': PaymentMethod,
    'Tenure': Tenure,
    'MonthlyCharges': MonthlyCharges,
    'TotalCharges': TotalCharges
}])

# Set classification threshold
classification_threshold = 0.5

# Predict button
if st.button("Predict"):
    prediction_proba = model.predict_proba(input_data)[0, 1]
    prediction = (prediction_proba >= classification_threshold).astype(int)
    result = "churn" if prediction == 1 else "not churn"
    st.write(f"Prediction: The customer is likely to **{result}**.")
    st.write(f"Churn Probability: {prediction_proba:.2f}")