diff --git a/include/pocketpy/pocketpy.h b/include/pocketpy/pocketpy.h
index 128dbb4f..bd7e0f3a 100644
--- a/include/pocketpy/pocketpy.h
+++ b/include/pocketpy/pocketpy.h
@@ -149,6 +149,7 @@ py_GlobalRef py_tpmagic(py_Type type, py_Name name);
 
 // new style decl-based bindings
 void py_bind(py_Ref obj, const char* sig, py_CFunction f);
+
 py_ObjectRef py_bind2(py_Ref obj,
                       const char* sig,
                       py_CFunction f,
@@ -156,20 +157,6 @@ py_ObjectRef py_bind2(py_Ref obj,
                       const char* docstring,
                       int slots);
 
-py_ObjectRef py_bind3(py_Ref obj,
-                      py_CFunction f,
-                      c11_sv name,
-                      c11_sv* args,
-                      int argc,
-                      c11_sv starred_arg,
-                      c11_sv* kwargs,
-                      int kwargc,
-                      py_Ref kwdefaults,  // a tuple contains default values
-                      c11_sv starred_kwarg,
-                      enum BindType bt,
-                      const char* docstring,
-                      int slots);
-
 // old style argc-based bindings
 void py_bindmethod(py_Type type, const char* name, py_CFunction f);
 void py_bindmethod2(py_Type type, const char* name, py_CFunction f, enum BindType bt);
@@ -381,6 +368,9 @@ bool py_tpcall(py_Type type, int argc, py_Ref argv);
 /// Check if the object is an instance of the given type.
 bool py_checktype(py_Ref self, py_Type type);
 
+/// Get the type of the object.
+py_Type py_typeof(py_Ref self);
+
 #define py_checkint(self) py_checktype(self, tp_int)
 #define py_checkfloat(self) py_checktype(self, tp_float)
 #define py_checkbool(self) py_checktype(self, tp_bool)
diff --git a/src/public/cast.c b/src/public/cast.c
index 833f74b6..81bf6a6d 100644
--- a/src/public/cast.c
+++ b/src/public/cast.c
@@ -42,8 +42,8 @@ void* py_touserdata(py_Ref self) {
 bool py_istype(py_Ref self, py_Type type) { return self->type == type; }
 
 bool py_checktype(py_Ref self, py_Type type) {
-    if(self->type != type) {
-        return TypeError("expected %t, got %t", type, self->type);
-    }
-    return true;
-}
\ No newline at end of file
+    if(self->type == type) return true;
+    return TypeError("expected %t, got %t", type, self->type);
+}
+
+py_Type py_typeof(py_Ref self) { return self->type; }
\ No newline at end of file