Merge pull request #25 from PythonFreeCourse/week4

Add builtins notebook to week4

Author: yammesicka

week4/2_Dictionaries.ipynb

@@ -697,6 +697,23 @@
     "</ul>"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "<div class=\"align-center\" style=\"display: flex; text-align: right; direction: rtl;\">\n",
+    "    <div style=\"display: flex; width: 10%; \">\n",
+    "        <img src=\"images/tip.png\" style=\"height: 50px !important;\" alt=\"אזהרה!\"> \n",
+    "    </div>\n",
+    "    <div style=\"width: 90%\">\n",
+    "        <p style=\"text-align: right; direction: rtl;\">\n",
+    "            חדי העין שמו לב שאנחנו מצליחים להוסיף ערכים למילון, ולשנות בו ערכים קיימים.<br>\n",
+    "            מהתכונה הזו אנחנו למדים שמילון הוא mutable.\n",
+    "        </p>\n",
+    "    </div>\n",
+    "</div>"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -1163,7 +1180,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 52,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -1217,7 +1234,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 74,
+   "execution_count": null,
    "metadata": {},
    "outputs": [],
    "source": [