RK-J

Reason:
ssname present in the text file - print(*objects, sep=' ', end='\n', file=sys.stdout, flush=False)

ssname in the content kind:
- String value -> "print(*objects, sep=' ', end='\\n', file=sys.stdout, flush=False)"

ssname in the query to fetch the document from content kind:
select * from content where documentProcessingId = '68881601-b3dc-484e-ba5f-01246c2457b0' and ssname = 'Built-in Functions' and sssname = 'print(*objects, sep=\' \', end=\'\n\', file=sys.stdout, flush=False)'

we are doing escape SingleQuotation for the sname( ' to \'). If we don't escape single quotation, it will throw this error
SEVERE: com.google.cloud.datastore.DatastoreException: Encountered "r" at line 1, column 157.
Was expecting one of:
<EOF>
"and" ...
"group" ...
"limit" ...
"offset" ...
"order" ...

That's why the single quotation is escaped as the sssname is included in the query string. After the query, the filter looks like this,
     filters {
      property_filter {
        property {
          name: "sssname" 
        }
        op: EQUAL
        value {
          string_value: "print(*objects, sep=\' \', end=\'\n\', file=sys.stdout, flush=False)" 
        }
      }
    }

So, the sssname present in the filter and the sssname present in the content kind will not match. I thinks that's why it can't able find the matching document.

If we don't do escape single quotation, it will throw this error
SEVERE: com.google.cloud.datastore.DatastoreException: Encountered "r" at line 1, column 157., If we do escape single quotation, it will not find the comaparable document for document 60 of Lib ref DT.

Working as expected on QA