support not in, enable a test

transpiler/src/main/scala/org/polystat/py2eo/transpiler/PrintEO.scala

@@ -89,7 +89,9 @@ object PrintEO {
         val r1 = Field(r, "x__id__", ann.pos)
         printExpr(SimpleComparison(if (op == Compops.Is) Compops.Eq else Compops.Neq, l1, r1, ann.pos))
       case SimpleComparison(op, l, r, _) if op == Compops.In =>
-        orb + e(r) + ".contains-hack" + space + e(l) + crb
+        s"(${e(r)}.contains-hack ${e(l)})"
+      case SimpleComparison(op, l, r, _) if op == Compops.NotIn =>
+        s"((${e(r)}.contains-hack ${e(l)}).not)"
       case SimpleComparison(op, l, r, _) => orb + e(l) + "." + compop(op) + space + e(r) + crb
       case FreakingComparison(List(op), List(l, r), _) => orb + e(l) + "." + compop(op) + space + e(r) + crb
       case LazyLAnd(l, r, _) =>  orb + e(l) + ".and " + e(r) + crb

transpiler/src/test/resources/org/polystat/py2eo/transpiler/simple-tests/expressions/comparisons/comparison-6.yaml

@@ -1,4 +1,4 @@
-enabled: False
+enabled: True
 python: |
   def test():
     return 26 not in { x * x for x in range(1, 6) if (x % 2) == 1 }