Create app.py

app.py

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+import streamlit as st
+from traffic_logic import get_next_green
+
+st.set_page_config(page_title="Smart Traffic Light System", layout="wide")
+st.title("🚦 Smart Traffic Light Simulation")
+
+st.sidebar.header("Vehicle Count per Road")
+north = st.sidebar.slider("North Road", 0, 50, 10)
+east = st.sidebar.slider("East Road", 0, 50, 20)
+south = st.sidebar.slider("South Road", 0, 50, 5)
+west = st.sidebar.slider("West Road", 0, 50, 15)
+
+vehicle_counts = {'North': north, 'East': east, 'South': south, 'West': west}
+next_green = get_next_green(vehicle_counts)
+
+st.subheader("Traffic Light Status")
+
+cols = st.columns(4)
+for i, (road, count) in enumerate(vehicle_counts.items()):
+    light_color = "🟢 Green" if road == next_green else "🔴 Red"
+    cols[i].metric(label=f"{road} Road", value=f"{count} vehicles", delta=light_color)