Create app.py

just testing hugging face

app.py

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+import streamlit as st
+from sklearn.datasets import load_iris
+
+st.title("Hello World")
+st.header("This is a header")
+st.write("Hello class!")
+
+data = load_iris(as_frame=True)
+df = data.data
+
+st.write("## this is a subtitle")
+st.dataframe(df)