@@ -43,6 +43,7 @@
 
 import com.oracle.graal.python.builtins.Builtin;
 import com.oracle.graal.python.builtins.CoreFunctions;
+import com.oracle.graal.python.builtins.PythonBuiltinClassType;
 import com.oracle.graal.python.builtins.PythonBuiltins;
 import com.oracle.graal.python.builtins.objects.PNone;
 import com.oracle.graal.python.builtins.objects.PNotImplemented;
@@ -1767,4 +1768,26 @@ Object doGeneric(@SuppressWarnings("unused") Object self) {
             return PNotImplemented.NOT_IMPLEMENTED;
         }
     }
+
+    @Builtin(name = "to_bytes", minNumOfArguments = 1, maxNumOfArguments = 2)
+    @GenerateNodeFactory
+    abstract static class ToBytesNode extends PythonBuiltinNode {
+        @Specialization
+        PBytes doInt(int self, int length) {
+            byte[] bytes = new byte[length];
+            for (int i = 0 ; i < length; i++) {
+                bytes[i] = (byte) ((self >> i) & 0xFF);
+            }
+            return factory().createBytes(bytes);
+        }
+
+        @Specialization
+        PBytes doLong(long self, int length) {
+            byte[] bytes = new byte[length];
+            for (int i = 0 ; i < length; i++) {
+                bytes[i] = (byte) ((self >> i) & 0xFF);
+            }
+            return factory().createBytes(bytes);
+        }
+    }
 }