diff --git a/.ipynb_checkpoints/Week9-checkpoint.ipynb b/.ipynb_checkpoints/Week9-checkpoint.ipynb
new file mode 100644
index 0000000..d68ec6a
--- /dev/null
+++ b/.ipynb_checkpoints/Week9-checkpoint.ipynb
@@ -0,0 +1,92 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "id": "e074a0c8",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "7 시간 36분\n"
+     ]
+    }
+   ],
+   "source": [
+    "\n",
+    "totalTime = 456;\n",
+    "print(f\"{int(totalTime / 60)} 시간 {int(totalTime % 60)}분\")\n",
+    "\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 40,
+   "id": "75fc3091",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "('김철수', 2.8)\n",
+      "김철수 : 2.8\n",
+      "이영희 : 3.9\n",
+      "임꺽정 : 4.0\n",
+      "홍길동 : 3.4\n"
+     ]
+    },
+    {
+     "data": {
+      "text/plain": [
+       "[None, None, None, None]"
+      ]
+     },
+     "execution_count": 40,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "a = {\"홍길동\" : 3.4, \"임꺽정\" : 4.0, \"김철수\" : 2.8, \"이영희\" : 3.9}\n",
+    "#, \"임꺽정\" : 4.0, \"김철수\" : 2.8, \"이영희\" : 3.9\n",
+    "print(sorted(a.items())[0])\n",
+    "b = list(sorted(a.items())[0])\n",
+    "\n",
+    "\n",
+    "[print(key, \":\", value) for (key, value) in b]\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "7d7f589b",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.8"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
diff --git a/Week9.ipynb b/Week9.ipynb
new file mode 100644
index 0000000..b9ff576
--- /dev/null
+++ b/Week9.ipynb
@@ -0,0 +1,92 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "id": "7b18fb2f",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "7 시간 36분\n"
+     ]
+    }
+   ],
+   "source": [
+    "\n",
+    "totalTime = 456;\n",
+    "print(f\"{int(totalTime / 60)} 시간 {int(totalTime % 60)}분\")\n",
+    "\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 42,
+   "id": "7af4aefa",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "('김철수', 2.8)\n",
+      "김철수 : 2.8\n",
+      "이영희 : 3.9\n",
+      "임꺽정 : 4.0\n",
+      "홍길동 : 3.4\n"
+     ]
+    },
+    {
+     "data": {
+      "text/plain": [
+       "[None, None, None, None]"
+      ]
+     },
+     "execution_count": 42,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "a = {\"홍길동\" : 3.4, \"임꺽정\" : 4.0, \"김철수\" : 2.8, \"이영희\" : 3.9}\n",
+    "#, \"임꺽정\" : 4.0, \"김철수\" : 2.8, \"이영희\" : 3.9\n",
+    "print(sorted(a.items())[0])\n",
+    "b = sorted(a.items())\n",
+    "\n",
+    "\n",
+    "[print(key, \":\", value) for (key, value) in b]\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b0f315b6",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.8"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}