Added formatter structure and a boolean value formatter (#354)

* added formatter structure and a boolean value formatter

---------

Co-authored-by: Awni Hannun <[email protected]>

python/src/array.cpp

@@ -520,6 +520,9 @@ class ArrayPythonIterator {
 };
 
 void init_array(py::module_& m) {
+  // Set Python print formatting options
+  mlx::core::global_formatter.capitalize_bool = true;
+
   // Types
   py::class_<Dtype>(
       m,

python/tests/test_array.py

@@ -304,7 +304,7 @@ class TestArray(mlx_tests.MLXTestCase):
 
     def test_array_repr(self):
         x = mx.array(True)
-        self.assertEqual(str(x), "array(true, dtype=bool)")
+        self.assertEqual(str(x), "array(True, dtype=bool)")
         x = mx.array(1)
         self.assertEqual(str(x), "array(1, dtype=int32)")
         x = mx.array(1.0)