Create app.py

app.py

@@ -0,0 +1,29 @@
+# app.py
+import streamlit as st
+import pandas as pd
+import numpy as np
+
+def main():
+    st.title("My Streamlit App")
+    
+    st.write("## Data Visualization Example")
+    
+    # Generate sample data
+    chart_data = pd.DataFrame(
+        np.random.randn(20, 3),
+        columns=['A', 'B', 'C']
+    )
+    
+    # Display line chart
+    st.line_chart(chart_data)
+    
+    # Add a slider
+    age = st.slider('How old are you?', 0, 130, 25)
+    st.write("I'm ", age, 'years old')
+    
+    # Add a text input
+    user_input = st.text_input('Enter some text', 'Type here...')
+    st.write('You entered: ', user_input)
+
+if __name__ == "__main__":
+    main()