download logbook in standard HTML works

parsers/caves.py

@@ -19,7 +19,7 @@ django.db.transaction.TransactionManagementError:
 An error occurred in the current transaction. You can't execute queries until the end of the 'atomic' block.
 '''
 
-todo='''- Update does not work when a cave id is in the pending list but a proper cave description file exists
+todo='''- db Update does not work when a cave id is in the pending list but a proper cave description file exists
    and is being imported. It should work. But currently Django aborts and he file is not read in.
    
  - Cannot use Edit This Page for pendingcaves.txt_edit as Edit This Page is expecting an html file.
@@ -139,13 +139,13 @@ def readcaves():
     '''
     # For those caves which do not have cave_data/1623-xxx.html XML files even though they exist and have surveys
     # should put this in a simple list which can be edited using 'Edit this file'
-    pending = []
+    pending = set()
     fpending = Path(settings.CAVEDESCRIPTIONS, "pendingcaves.txt")
     if fpending.is_file():
         with open(fpending, "r") as fo:
             cids = fo.readlines()
         for cid in cids:
-            pending.append(cid.rstrip('\n'))
+            pending.add(cid.rstrip('\n'))
 
     with transaction.atomic():
         print(" - Deleting Caves and Entrances")