ITR model update code

AppCode/FileHandler.py

@@ -0,0 +1,12 @@
+import os
+
+class FileHandler:
+    ALLOWED_EXTENSIONS = {'pdf', 'docx', 'doc', 'xlsx', 'xls'}
+    UPLOAD_FOLDER = os.path.join('static', 'uploads')
+
+
+    @staticmethod
+    def CHeckExistingOrCreateNewUploadFolder():
+        #Wheteher path exists
+        os.makedirs(FileHandler.UPLOAD_FOLDER, exist_ok=True)
+        return