🐛 Don't use bare except, check for existence of index column instead

src/mods4pandas/lib.py

@@ -452,3 +452,12 @@ def convert_db_to_parquet(con, table, index_col, output_file):
             )
 
     df.to_parquet(output_file)
+
+
+def sqlite3_column_exists(con, table, col):
+    """Check if column col exists in table."""
+    cur = con.execute(
+            "SELECT 1 FROM pragma_table_info(?) WHERE name = ? LIMIT 1",
+            (table, col)
+    )
+    return cur.fetchone() is not None