Python min(Pointlist.Y) do odd things

Hi all,

what do i wrong…i try to get the min .Y values from point lists but
gives me not the expected result

min.3dm (62.4 KB) (17.5 KB)

strange result, max works but not min…wil try a list comprhension to get the right result
Thanks for help

OK list comprhension works.
[min([j.Y for j in i]) for i in x ]