Update app.py

app.py

@@ -7,13 +7,15 @@ import time
 from langchain.schema import SystemMessage
 from langchain_community.chat_models.gigachat import GigaChat
 from openpyxl import load_workbook
+from openpyxl.utils import get_column_letter
+from openpyxl.styles import Alignment
 import base64
 from together import Together
 import pymorphy2
 import re
 import string
 import io
-from datetime import datetime
+from datetime import datetime, timedelta
 
 morph = pymorphy2.MorphAnalyzer()