Add upload file option

app.py

@@ -1,4 +1,11 @@
 import streamlit as st
+import pandas as pd
 
 x = st.slider('Select a value')
 st.write(x, 'squared is', x * x)
+
+
+uploaded_file = st.file_uploader(“Choose a file”)
+if uploaded_file is not None:
+#read csv
+df1=pd.read_csv(uploaded_file)