Create app.py

app.py

@@ -0,0 +1,13 @@
+import streamlit as st
+
+# Define a function to calculate the square of a number
+def calculate_square(number):
+    return number * number
+
+# Add a text input widget for users to input a number
+number_input = st.number_input("Enter a number:")
+
+# When the user inputs a number, calculate and display its square
+if number_input is not None:
+    square = calculate_square(number_input)
+    st.write(f"The square of {number_input} is {square}")