Fix printing unsortable dict (#54)

src/objprint/objprint.py

@@ -129,9 +129,14 @@ def _objstr(self, obj, memo, indent_level, cfg):
         if isinstance(obj, list) or isinstance(obj, tuple) or isinstance(obj, set):
             elems = (f"{self._objstr(val, memo, indent_level + 1, cfg)}" for val in obj)
         elif isinstance(obj, dict):
+            items = obj.items()
+            try:
+                items = sorted(items)
+            except TypeError:
+                pass
             elems = (
                 f"{self._objstr(key, None, indent_level + 1, cfg)}: {self._objstr(val, memo, indent_level + 1, cfg)}"
-                for key, val in sorted(obj.items())
+                for key, val in items
             )
         else:
             # It's an object

tests/test_objprint.py

@@ -254,6 +254,14 @@ def test_no_color(self):
         self.assertNotIn(COLOR.CYAN, output)
         self.assertNotIn(COLOR.DEFAULT, output)
 
+    def test_unsortable_dict(self):
+        d = {1: 2, "a": 3}
+        with io.StringIO() as buf, redirect_stdout(buf):
+            op(d, color=False)
+            output = buf.getvalue()
+        self.assertIn("1", output)
+        self.assertIn("a", output)
+
     def test_label_only(self):
         with io.StringIO() as buf, redirect_stdout(buf):
             obj = ObjTest({"Age": 10, "grade": 5})