Update app.py

app.py

@@ -30,6 +30,10 @@ def process_csv(input_file):
     }
     df.rename(columns=column_name_mapping, inplace=True)
 
+    # Convert the '請求日' column from YYYYMMDD to YYYY/MM/DD format
+    df['請求日'] = df['請求日'].astype(str).apply(lambda x: x[:4] + '/' + x[4:6] + '/' + x[6:8])
+
+
     # Group by '請求番号' and modify rows
     df_grouped = df.groupby('請求番号')
     dfs = []