quick editing for app.py

app.py

@@ -1,5 +1,6 @@
 import streamlit as st
 import plotly.express as px
+import pandas as pd
 
 # DONE Test streamlit 
 x = st.slider('Select a value')

flycheck_app.py

@@ -0,0 +1,17 @@
+import streamlit as st
+import plotly.express as px
+import pandas as pd
+
+# DONE Test streamlit 
+x = st.slider('Select a value')
+st.write(x, 'squared is', x * x)
+
+# Test plotly plotting
+# Create a sample dataframe
+df = pd.DataFrame({'x': [1, 2, 3, 4], 'y': [10, 20, 30, 40], 'z': ['A', 'B', 'C', 'D']})
+
+# Plot a scatter plot using x, y columns
+fig = px.scatter(df, x='x', y='y')
+
+# Show it through streamlit
+st.plotly_chart(fig, use_container_width=True)