Pattern matching gotchas

list.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Caught [{'foo': 'bar'}, {'bar': 'baz'}]\n",
      "Did not catch [{'bar': 'baz'}, {'foo': 'bar'}]\n"
     ]
    }
   ],
   "source": [
    "x = [\n",
    "    {\"foo\": \"bar\"},\n",
    "    {\"bar\": \"baz\"},\n",
    "]\n",
    "y = [\n",
    "    {\"bar\": \"baz\"},\n",
    "    {\"foo\": \"bar\"},\n",
    "]\n",
    "\n",
    "for item in (x, y):\n",
    "    match item:\n",
    "        case [{\"foo\": \"bar\"}, *other_items]:\n",
    "            print(f\"Caught {item}\")\n",
    "        case _:\n",
    "            print(f\"Did not catch {item}\")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Caught {'foo': 'bar', 'bar': 'baz'}\n",
      "Caught {'bar': 'baz', 'foo': 'bar'}\n"
     ]
    }
   ],
   "source": [
    "x = {\"foo\": \"bar\", \"bar\": \"baz\"}\n",
    "y = {\"bar\": \"baz\", \"foo\": \"bar\"}\n",
    "\n",
    "for item in (x, y):\n",
    "    match item:\n",
    "        case {\"foo\": \"bar\", **kwargs}:\n",
    "            print(f\"Caught {item}\")\n",
    "        case _:\n",
    "            print(f\"Did not catch {item}\")"
   ]
  }
 ],
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  "kernelspec": {
   "display_name": "Python 3.10.8 ('.venv': poetry)",
   "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": "3.10.8"
  },
  "orig_nbformat": 4,
  "vscode": {
   "interpreter": {
    "hash": "cd44e36c613be01649759f409b60d8bc3a6d73161928441df7ba39adc0804353"
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 "nbformat": 4,
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