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exercise 4-13 p.67 #8

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171 changes: 160 additions & 11 deletions for-loops.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -22,9 +22,19 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 3,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"odysseus\n",
"neoptolemus\n",
"philoctetes\n"
]
}
],
"source": [
"cast = [\"odysseus\", \"neoptolemus\", \"philoctetes\"]\n",
"\n",
Expand All @@ -47,7 +57,7 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 4,
"metadata": {},
"outputs": [],
"source": [
Expand All @@ -63,9 +73,20 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 5,
"metadata": {},
"outputs": [],
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"odysseus\n",
"neoptolemus\n",
"philoctetes\n",
"And now the loop is done!\n"
]
}
],
"source": [
"cast = [\"odysseus\", \"neoptolemus\", \"philoctetes\"]\n",
"\n",
Expand All @@ -86,9 +107,18 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 6,
"metadata": {},
"outputs": [],
"outputs": [
{
"ename": "IndentationError",
"evalue": "expected an indented block after 'for' statement on line 3 (3799840020.py, line 4)",
"output_type": "error",
"traceback": [
"\u001b[0;36m Cell \u001b[0;32mIn[6], line 4\u001b[0;36m\u001b[0m\n\u001b[0;31m print(character)\u001b[0m\n\u001b[0m ^\u001b[0m\n\u001b[0;31mIndentationError\u001b[0m\u001b[0;31m:\u001b[0m expected an indented block after 'for' statement on line 3\n"
]
}
],
"source": [
"cast = [\"odysseus\", \"neoptolemus\", \"philoctetes\"]\n",
"\n",
Expand Down Expand Up @@ -278,9 +308,21 @@
},
{
"cell_type": "code",
"execution_count": null,
"execution_count": 11,
"metadata": {},
"outputs": [],
"outputs": [
{
"ename": "TypeError",
"evalue": "'tuple' object does not support item assignment",
"output_type": "error",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[0;31mTypeError\u001b[0m Traceback (most recent call last)",
"Cell \u001b[0;32mIn[11], line 3\u001b[0m\n\u001b[1;32m 1\u001b[0m my_tuple \u001b[38;5;241m=\u001b[39m (\u001b[38;5;241m1\u001b[39m, \u001b[38;5;241m2\u001b[39m, \u001b[38;5;241m3\u001b[39m)\n\u001b[0;32m----> 3\u001b[0m \u001b[43mmy_tuple\u001b[49m\u001b[43m[\u001b[49m\u001b[38;5;241;43m1\u001b[39;49m\u001b[43m]\u001b[49m \u001b[38;5;241m=\u001b[39m \u001b[38;5;241m5\u001b[39m\n",
"\u001b[0;31mTypeError\u001b[0m: 'tuple' object does not support item assignment"
]
}
],
"source": [
"my_tuple = (1, 2, 3)\n",
"\n",
Expand All @@ -304,11 +346,118 @@
"\n",
"Matthes 2023, p. 67, Exercise 4-13."
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"4-13. Buffet: A buffet-style restaurant offers only five basic foods. Think of five\n",
"simple foods, and store them in a tuple.\n"
]
},
{
"cell_type": "code",
"execution_count": 14,
"metadata": {},
"outputs": [],
"source": [
"menu = (\"spring roll\", \"ramen\", \"curry\", \"rice\", \"steak\")"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"- Use a for loop to print each food the restaurant offers"
]
},
{
"cell_type": "code",
"execution_count": 15,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"spring roll\n",
"ramen\n",
"curry\n",
"rice\n",
"steak\n"
]
}
],
"source": [
"for food in menu:\n",
" print(food)"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"- Try to modify one of the items, and make sure that Python rejects the\n",
"change."
]
},
{
"cell_type": "code",
"execution_count": 16,
"metadata": {},
"outputs": [
{
"ename": "TypeError",
"evalue": "'tuple' object does not support item assignment",
"output_type": "error",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[0;31mTypeError\u001b[0m Traceback (most recent call last)",
"Cell \u001b[0;32mIn[16], line 1\u001b[0m\n\u001b[0;32m----> 1\u001b[0m \u001b[43mmenu\u001b[49m\u001b[43m[\u001b[49m\u001b[38;5;241;43m1\u001b[39;49m\u001b[43m]\u001b[49m \u001b[38;5;241m=\u001b[39m \u001b[38;5;124m\"\u001b[39m\u001b[38;5;124mnone\u001b[39m\u001b[38;5;124m\"\u001b[39m\n",
"\u001b[0;31mTypeError\u001b[0m: 'tuple' object does not support item assignment"
]
}
],
"source": [
"menu[1] = \"none\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"- The restaurant changes its menu, replacing two of the items with different\n",
"foods. Add a line that rewrites the tuple, and then use a for loop to print\n",
"each of the items on the revised menu."
]
},
{
"cell_type": "code",
"execution_count": 17,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"bread\n",
"ramen\n",
"braised pork\n",
"rice\n",
"steak\n"
]
}
],
"source": [
"menu = (\"bread\", \"ramen\", \"braised pork\", \"rice\", \"steak\")\n",
"for food in menu:\n",
" print(food)"
]
}
],
"metadata": {
"kernelspec": {
"display_name": ".venv",
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
Expand All @@ -322,7 +471,7 @@
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.12.7"
"version": "3.12.1"
}
},
"nbformat": 4,
Expand Down