Update app.py

app.py

@@ -1,11 +1,12 @@
 import os
-os.system("pip install streamlit pandas xlsxwriter openpyxl")
+os.system("pip install streamlit pandas xlsxwriter openpyxl matplotlib")
 
 import streamlit as st
 import pandas as pd
 import xlsxwriter
 from io import BytesIO
 from collections import Counter
+import matplotlib.pyplot as plt  # Added for pie chart
 
 # Set of 20 standard amino acids
 AMINO_ACIDS = set("ACDEFGHIKLMNPQRSTVWY")
@@ -56,6 +57,21 @@ if uploaded_file and st.button("Analyze File"):
 
         st.dataframe(df_result)
 
+        # 🔵 Pie Chart for Overall Stats
+        st.subheader("🧁 Overall Amino Acid Composition (Pie Chart)")
+
+        fig, ax = plt.subplots()
+        labels = list(overall_percentage.keys())
+        sizes = list(overall_percentage.values())
+
+        # Filter zero values
+        filtered = [(label, size) for label, size in zip(labels, sizes) if size > 0]
+        labels, sizes = zip(*filtered)
+
+        ax.pie(sizes, labels=labels, autopct='%1.1f%%', startangle=90, counterclock=False)
+        ax.axis('equal')  # Equal aspect ratio ensures that pie is drawn as a circle.
+        st.pyplot(fig)
+
         # Export to Excel
         def to_excel(df):
             output = BytesIO()
@@ -82,4 +98,4 @@ if uploaded_file and st.button("Analyze File"):
             data=excel_file,
             file_name="amino_acid_percentage.xlsx",
             mime="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
-        )
+        )