Fix notebooks for ibis 6.1

Author: jcrist

examples/clickhouse-hackernews.ipynb

@@ -45,9 +45,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "con = ibis.clickhouse.connect(\n",
-    "    host=\"play.clickhouse.com\", port=9440, user=\"play\", secure=True\n",
-    ")"
+    "con = ibis.connect(\"clickhouse://play@play.clickhouse.com:443\")"
    ]
   },
   {
@@ -160,7 +158,11 @@
    "outputs": [],
    "source": [
     "top_commenters = (\n",
-    "    t.filter(_.by != \"\").group_by(\"by\").count().order_by(ibis.desc(\"count\")).limit(5)\n",
+    "    t.filter(_.by != \"\")\n",
+    "    .group_by(\"by\")\n",
+    "    .agg(count=_.count())\n",
+    "    .order_by(ibis.desc(\"count\"))\n",
+    "    .limit(5)\n",
     ")\n",
     "\n",
     "top_commenters"
@@ -251,7 +253,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.10"
+   "version": "3.10.12"
   }
  },
  "nbformat": 4,

tutorial/04-More-Value-Expressions.ipynb

@@ -470,11 +470,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "independence[\n",
-    "    independence.independence_date.min(),\n",
-    "    independence.independence_date.max(),\n",
-    "    independence.count().name(\"nrows\"),\n",
-    "].distinct()"
+    "independence.independence_date.max()"
    ]
   },
   {
@@ -515,7 +511,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.8"
+   "version": "3.10.12"
   }
  },
  "nbformat": 4,