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NDB Google App Engine Ancestor Request Not Set

I am trying to execute the following query:

query = Comment.query(ancestor = userKey, ndb.OR(Comment.modifiedDate > lastSyncDate, Comment.activityDate > lastSyncDate))

The 1 equal sign (=) is how docs said that we should have it, but my application does not start when I have only one equal sign (build error). If I use two equal signs, for example ancestor == userKey , the application starts, but I get NameError: global name 'ancestor' is not defined . What gives?

I also tried a different version of this query, but the same problem occurs:

 query = Comment.query(ndb.AND(ancestor == userKey, ndb.OR(Comment.modifiedDate > lastSyncDate, Comment.activityDate > lastSyncDate)))
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1 answer

You need to put the ancestor keyword after the positional parameters of the method:

 query = Comment.query( ndb.OR(Comment.modifiedDate > lastSyncDate, Comment.activityDate > lastSyncDate), ancestor=userKey)

Alternatively, use the filters keyword explicitly or use the .filter() method:

 query = Comment.query( ancestor=userKey, filters=ndb.OR(Comment.modifiedDate > lastSyncDate, Comment.activityDate > lastSyncDate))

or

 query = Comment.query(ancestor=userKey).filter(ndb.OR(Comment.modifiedDate > lastSyncDate, Comment.activityDate > lastSyncDate))
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Source: https://habr.com/ru/post/1432316/

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