{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "da3c7c5e",
   "metadata": {},
   "source": [
    "# 11-26 · Mini-projekty z kolekcjami\n",
    "\n",
    "Praktyka do sekcji [„Mini-projekty z kolekcjami”"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "97b27d1d",
   "metadata": {},
   "source": [
    "## Cel\n",
    "\n",
    "Notes (dict) + porównanie wielu umiejętności w jednym zadaniu."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6caf33e9",
   "metadata": {},
   "source": [
    "## Podstawowa praktyka zadań ★"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "e8bdd023",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-17T14:45:01.312660Z",
     "iopub.status.busy": "2026-08-17T14:45:01.312506Z",
     "iopub.status.idle": "2026-08-17T14:45:01.331631Z",
     "shell.execute_reply": "2026-08-17T14:45:01.329337Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'Anna': 'anna.new@example.com', 'Maria': 'maria@example.com'}\n",
      "{'sql'}\n"
     ]
    }
   ],
   "source": [
    "contacts = {\"Anna\": \"anna@example.com\", \"Bob\": \"bob@example.com\"}\n",
    "contacts[\"Maria\"] = \"maria@example.com\"\n",
    "contacts[\"Anna\"] = \"anna.new@example.com\"\n",
    "del contacts[\"Bob\"]\n",
    "\n",
    "required = {\"python\", \"git\", \"sql\"}\n",
    "available = {\"python\", \"git\"}\n",
    "missing = required - available\n",
    "\n",
    "print(contacts)\n",
    "print(missing)"
   ]
  }
 ],
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