update app.py

app.py

@@ -1,4 +1,5 @@
 import json
+from collections import Counter
 
 import altair as alt
 import japanize_matplotlib
@@ -260,6 +261,21 @@ def main():
             ax.axis("off")
             st.pyplot(fig, use_container_width=True)
 
+        if selected_source_type == "GitHub":
+            all_languages = [
+                language
+                for languages_list in df["languages"]
+                for language in languages_list
+            ]
+            language_counts = Counter(all_languages)
+            language_df = pd.DataFrame(
+                language_counts.items(), columns=["Language", "Count"]
+            )
+            language_df = language_df.sort_values(by="Count", ascending=False)
+
+            st.markdown("### Language Usage Table")
+            st.dataframe(language_df)
+
     with col2:
         if selected_source_type == "GitHub":
             vs_type = "stargazers_count"