PYBuiltin test cases are indeterministic #843
Description
As described in #839, the Python Parser has some indeterministic functionality: the PYBuiltin test cases have been flaky
for some time, especially after the library version updates in that PR. Meaning with the same environment, these tests sometimes pass, sometimes fail.
While whether a node is built-in is only shown in the info tree, this is not a critical bug; but still worrisome, as could indicate a more serious issue.
It should be thoroughly investigated, and the removed test cases should be readded afterwards a fix.