Allow passing Any to Python methods

lib/Inline/Python.pm6

@@ -48,6 +48,9 @@ sub py_sequence_check(OpaquePointer)
 sub py_mapping_check(OpaquePointer)
     returns int32 { ... }
     native(&py_mapping_check);
+sub py_is_none(OpaquePointer)
+    returns int32 { ... }
+    native(&py_is_none);
 sub py_int_as_long(OpaquePointer)
     returns Int { ... }
     native(&py_int_as_long);
@@ -137,7 +140,10 @@ method py_dict_to_hash(OpaquePointer $py_dict) {
 
 method py_to_p6(OpaquePointer $value) {
     return Any unless defined $value;
-    if py_instance_check($value) {
+    if py_is_none($value) {
+        return Any;
+    }
+    elsif py_instance_check($value) {
         py_inc_ref($value);
         return PythonObject.new(python => self, ptr => $value);
     }

pyhelper.c

@@ -68,6 +68,10 @@ int py_mapping_check(PyObject *obj) {
     return PyMapping_Check(obj);
 }
 
+int py_is_none(PyObject *obj) {
+    return obj == Py_None;
+}
+
 long py_int_as_long(PyObject *obj) {
     return PyInt_AsLong(obj);
 }

t/call.t

@@ -3,7 +3,7 @@
 use v6;
 use Inline::Python;
 
-say "1..9";
+say "1..10";
 
 my $py = Inline::Python.new();
 $py.run('
@@ -124,14 +124,14 @@ else {
     say "not ok 9 - Python method call with parameters";
 }
 
-if False {
 if ($py.call('__main__', 'test_none', Any) == 1) {
     say "ok 10 - Any converted to undef";
 }
 else {
     say "not ok 10 - Any converted to undef";
 }
 
+if False {
 if ($py.call('__main__', 'test_hash', {a => 2, b => {c => [4, 3]}}) == 1) {
     say "ok 11 - Passing hashes to Python";
 }