diff --git a/understanding-python/python-01-introduction.ipynb b/understanding-python/python-01-introduction.ipynb
index f25f490ef9b7ccfccd088f4001c3a581d43b871c..dcb78df9c08cbdf9939f63f0e57c229efcb6a2b6 100644
--- a/understanding-python/python-01-introduction.ipynb
+++ b/understanding-python/python-01-introduction.ipynb
@@ -167,9 +167,9 @@
    },
    "outputs": [],
    "source": [
-    "my_age = _____\n",
-    "_____ = 7.5\n",
-    "my_dog_age = _____\n",
+    "my_age = 19\n",
+    "human_2_dog_age = 7.5\n",
+    "my_dog_age = 2.5\n",
     "print(_____)"
    ]
   }