Update documentation

_sources/chap01.ipynb

@@ -55,7 +55,7 @@
     "        print(\"Downloaded \" + str(local))\n",
     "    return filename\n",
     "\n",
-    "download('https://raw.githubusercontent.com/AllenDowney/ThinkPython/v3/thinkpython.py')\n",
+    "download('https://github.com/AllenDowney/ThinkPython/raw/v3/thinkpython.py');\n",
     "\n",
     "import thinkpython"
    ]
@@ -1437,6 +1437,19 @@
     "## Exercises"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "06d3e72c",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# This cell tells Jupyter to provide detailed debugging information\n",
+    "# when a runtime error occurs. Run it before working on the exercises.\n",
+    "\n",
+    "%xmode Verbose"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "23adf208",
@@ -1458,6 +1471,8 @@
    "id": "ebf1a451",
    "metadata": {},
    "source": [
+    "Here are some topics you could ask a virtual assistant about:\n",
+    "\n",
     "* Earlier I mentioned bitwise operators but I didn't explain why the value of `7 ^ 2` is 5. Try asking \"What are the bitwise operators in Python?\" or \"What is the value of `7 XOR 2`?\"\n",
     "\n",
     "* I also mentioned the order of operations. For more details, ask \"What is the order of operations in Python?\"\n",

_sources/chap03.ipynb

@@ -4,7 +4,11 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "103cbe3c",
-   "metadata": {},
+   "metadata": {
+    "tags": [
+     "remove-cell"
+    ]
+   },
    "outputs": [],
    "source": [
     "from os.path import basename, exists\n",
@@ -19,24 +23,9 @@
     "    return filename\n",
     "\n",
     "download('https://github.com/AllenDowney/ThinkPython/raw/v3/thinkpython.py');\n",
-    "download('https://github.com/AllenDowney/ThinkPython/raw/v3/diagram.py');"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 10,
-   "id": "d4b444ba",
-   "metadata": {
-    "tags": [
-     "remove-cell"
-    ]
-   },
-   "outputs": [],
-   "source": [
-    "import thinkpython\n",
+    "download('https://github.com/AllenDowney/ThinkPython/raw/v3/diagram.py');\n",
     "\n",
-    "%load_ext autoreload\n",
-    "%autoreload 2"
+    "import thinkpython"
    ]
   },
   {
@@ -978,12 +967,25 @@
     "## Exercises"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "3f77b428",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# This cell tells Jupyter to provide detailed debugging information\n",
+    "# when a runtime error occurs. Run it before working on the exercises.\n",
+    "\n",
+    "%xmode Verbose"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "82951027",
    "metadata": {},
    "source": [
-    "### Ask an assistant\n",
+    "### Ask a virtual assistant\n",
     "\n",
     "The statements in a function or a `for` loop are indented by four spaces, by convention.\n",
     "But not everyone agrees with that convention.\n",

_sources/chap04.ipynb

@@ -22,8 +22,8 @@
     "        print(\"Downloaded \" + str(local))\n",
     "    return filename\n",
     "\n",
-    "download('https://raw.githubusercontent.com/AllenDowney/ThinkPython/v3/thinkpython.py')\n",
-    "download('https://raw.githubusercontent.com/AllenDowney/ThinkPython/v3/diagram.py')\n",
+    "download('https://github.com/AllenDowney/ThinkPython/raw/v3/thinkpython.py');\n",
+    "download('https://github.com/AllenDowney/ThinkPython/raw/v3/diagram.py');\n",
     "download('https://github.com/ramalho/jupyturtle/releases/download/2024-03/jupyturtle.py');"
    ]
   },
@@ -1427,11 +1427,38 @@
   },
   {
    "cell_type": "markdown",
-   "id": "50ed5c38",
+   "id": "0bfe2e19",
    "metadata": {},
    "source": [
-    "## Exercises\n",
+    "## Exercises"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 47,
+   "id": "9f94061e",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Exception reporting mode: Verbose\n"
+     ]
+    }
+   ],
+   "source": [
+    "# This cell tells Jupyter to provide detailed debugging information\n",
+    "# when a runtime error occurs. Run it before working on the exercises.\n",
     "\n",
+    "%xmode Verbose"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "50ed5c38",
+   "metadata": {},
+   "source": [
     "For the exercises below, there are a few more turtle functions you might want to use.\n",
     "\n",
     "* `penup` lifts the turtle's imaginary pen so it doesn't leave a trail when it moves.\n",
@@ -3945,7 +3972,7 @@
    "id": "9d9f35d1",
    "metadata": {},
    "source": [
-    "### Ask an assistant\n",
+    "### Ask a virtual assistant\n",
     "\n",
     "There are several modules like `jupyturtle` in Python, and the one we used in this chapter has been customized for this book.\n",
     "So if you ask a virtual assistant for help, it won't know which module to use.\n",