Create app.py

app.py

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+import streamlit as st
+import pandas as pd
+import plotly.express as px
+import plotly.graph_objects as go
+
+# Title of the App
+st.title("Excel Graph Visualizer")
+
+# File Upload Section
+uploaded_file = st.file_uploader("Upload your Excel file", type=["xlsx", "xls"])
+
+if uploaded_file:
+    # Read Excel file
+    try:
+        df = pd.read_excel(uploaded_file)
+        st.write("Data Preview:")
+        st.dataframe(df)
+
+        # Dropdown for selecting graph type
+        graph_type = st.selectbox(
+            "Select Graph Type",
+            ["Clustered Column", "Line Chart", "Single Axis", "Double Axis"]
+        )
+
+        # Dropdowns for selecting columns for x and y axes
+        x_axis = st.selectbox("Select X-axis column", df.columns)
+        y_axis = st.multiselect("Select Y-axis column(s)", df.columns)
+
+        # Generate Graph based on selection
+        if graph_type == "Clustered Column" and len(y_axis) > 0:
+            fig = px.bar(df, x=x_axis, y=y_axis, barmode="group")
+            st.plotly_chart(fig)
+        
+        elif graph_type == "Line Chart" and len(y_axis) > 0:
+            fig = px.line(df, x=x_axis, y=y_axis)
+            st.plotly_chart(fig)
+
+        elif graph_type == "Single Axis" and len(y_axis) == 1:
+            fig = px.line(df, x=x_axis, y=y_axis[0])
+            st.plotly_chart(fig)
+
+        elif graph_type == "Double Axis" and len(y_axis) == 2:
+            fig = go.Figure()
+            fig.add_trace(go.Scatter(x=df[x_axis], y=df[y_axis[0]], mode='lines', name=y_axis[0]))
+            fig.add_trace(go.Scatter(x=df[x_axis], y=df[y_axis[1]], mode='lines', name=y_axis[1], yaxis="y2"))
+            
+            # Add a secondary y-axis
+            fig.update_layout(
+                yaxis2=dict(
+                    title=y_axis[1],
+                    overlaying='y',
+                    side='right'
+                ),
+                title="Double Axis Graph"
+            )
+            st.plotly_chart(fig)
+        else:
+            st.warning("Please select appropriate columns and graph type.")
+    except Exception as e:
+        st.error(f"Error loading file: {e}")
+else:
+    st.info("Please upload an Excel file to get started.")
+
+# Add Footer
+st.write("---")
+st.write("Developed using [Streamlit](https://streamlit.io) and [Hugging Face Spaces](https://huggingface.co/spaces).")