Update src/streamlit_app.py

src/streamlit_app.py

@@ -1,40 +1,22 @@
-import altair as alt
-import numpy as np
-import pandas as pd
 import streamlit as st
 
-"""
-# Welcome to Streamlit!
+st.title("Simple Arithmetic App")
 
-Edit `/streamlit_app.py` to customize this app to your heart's desire :heart:.
-If you have any questions, checkout our [documentation](https://docs.streamlit.io) and [community
-forums](https://discuss.streamlit.io).
+# Input values
+a = st.number_input("Enter first number", value=0.0)
+b = st.number_input("Enter second number", value=0.0)
 
-In the meantime, below is an example of what you can do with just a few lines of code:
-"""
+# Operation selection
+operation = st.selectbox("Choose an operation", ["Add", "Subtract", "Multiply", "Divide"])
 
-num_points = st.slider("Number of points in spiral", 1, 10000, 1100)
-num_turns = st.slider("Number of turns in spiral", 1, 300, 31)
+# Result
+if operation == "Add":
+    result = a + b
+elif operation == "Subtract":
+    result = a - b
+elif operation == "Multiply":
+    result = a * b
+elif operation == "Divide":
+    result = "Cannot divide by zero" if b == 0 else a / b
 
-indices = np.linspace(0, 1, num_points)
-theta = 2 * np.pi * num_turns * indices
-radius = indices
-
-x = radius * np.cos(theta)
-y = radius * np.sin(theta)
-
-df = pd.DataFrame({
-    "x": x,
-    "y": y,
-    "idx": indices,
-    "rand": np.random.randn(num_points),
-})
-
-st.altair_chart(alt.Chart(df, height=700, width=700)
-    .mark_point(filled=True)
-    .encode(
-        x=alt.X("x", axis=None),
-        y=alt.Y("y", axis=None),
-        color=alt.Color("idx", legend=None, scale=alt.Scale()),
-        size=alt.Size("rand", legend=None, scale=alt.Scale(range=[1, 150])),
-    ))
+st.write("### Result:", result)