Don't inherit __init__ from base class

Author: dean0x7d

include/pybind11/class_support.h

@@ -428,6 +428,9 @@ inline PyObject* make_new_python_type(const type_record &rec) {
     if (bases.size() > 0)
         type->tp_bases = bases.release().ptr();
 
+    /* Don't inherit base __init__ */
+    type->tp_init = pybind11_init;
+
     /* Supported protocols */
     type->tp_as_number = &heap_type->as_number;
     type->tp_as_sequence = &heap_type->as_sequence;

tests/test_inheritance.cpp

@@ -36,6 +36,10 @@ class Hamster : public Pet {
     Hamster(const std::string &name) : Pet(name, "rodent") {}
 };
 
+class Chimera : public Pet {
+    Chimera() : Pet("Kimmy", "chimera") {}
+};
+
 std::string pet_name_species(const Pet &pet) {
     return pet.name() + " is a " + pet.species();
 }
@@ -74,6 +78,8 @@ test_initializer inheritance([](py::module &m) {
     py::class_<Hamster, Pet>(m, "Hamster")
         .def(py::init<std::string>());
 
+    py::class_<Chimera, Pet>(m, "Chimera");
+
     m.def("pet_name_species", pet_name_species);
     m.def("dog_bark", dog_bark);
 

tests/test_inheritance.py

@@ -2,7 +2,7 @@
 
 
 def test_inheritance(msg):
-    from pybind11_tests import Pet, Dog, Rabbit, Hamster, dog_bark, pet_name_species
+    from pybind11_tests import Pet, Dog, Rabbit, Hamster, Chimera, dog_bark, pet_name_species
 
     roger = Rabbit('Rabbit')
     assert roger.name() + " is a " + roger.species() == "Rabbit is a parrot"
@@ -30,6 +30,10 @@ def test_inheritance(msg):
         Invoked with: <m.Pet object at 0>
     """
 
+    with pytest.raises(TypeError) as excinfo:
+        Chimera("lion", "goat")
+    assert "No constructor defined!" in str(excinfo.value)
+
 
 def test_automatic_upcasting():
     from pybind11_tests import return_class_1, return_class_2, return_class_n, return_none