Add PDF export functionality in app.py for marketshares data

- Introduced a new function `convert_df_to_pdf` to enable PDF export of dataframes.
- Added a download selection option for users to choose between CSV and PDF formats for marketshares data.
- Updated the download button to handle PDF exports, enhancing the data export capabilities of the application.

app.py

@@ -98,6 +98,9 @@ def init_baselines():
 def convert_df_to_csv(df):
     return df.to_csv().encode('utf-8')
 
+def convert_df_to_pdf(df):
+    return df.to_pdf().encode('utf-8')
+
 matchups, overall_ms, team_frame, team_list, team_dict = init_baselines()
 
 col1, col2 = st.columns([1, 9])
@@ -118,20 +121,24 @@ with col2:
         display_table = matchups
         display_table = display_table.set_index('Team')
         st.dataframe(display_table.style.background_gradient(axis=0).background_gradient(cmap='RdYlGn').format(matchups_format, precision=2), height=500, use_container_width = True)
-        st.download_button(
-            label="Export Matchups",
-            data=convert_df_to_csv(display_table),
-            file_name='Matchups_export.csv',
-            mime='text/csv',
-        )
     elif split_var1 == 'Line Marketshares':
         display_table = overall_ms
         display_parsed = display_table[display_table['Line'].str.contains('|'.join(team_split))]
         display_parsed = display_parsed.set_index('Line')
         st.dataframe(display_parsed.style.background_gradient(axis=0).background_gradient(cmap='RdYlGn').format(percentages_format, precision=2), height=500, use_container_width = True)
+download_var = st.selectbox('What download would you like?', options = ['CSV', 'PDF'], key='download_var')
+if st.button('Download'):
+    if download_var == 'CSV':
+        st.download_button(
+            label="Export Marketshares (CSV)",
+    data=convert_df_to_csv(display_table),
+    file_name='Marketshares_export.csv',
+    mime='text/csv',
+        )
+    elif download_var == 'PDF':
         st.download_button(
-            label="Export Marketshares",
-            data=convert_df_to_csv(display_table),
-            file_name='Marketshares_export.csv',
-            mime='text/csv',
+            label="Export Marketshares (PDF)",
+            data=convert_df_to_pdf(display_table),
+            file_name='Marketshares_export.pdf',
+            mime='application/pdf',
         )