1 : Les tuples.ipynb

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   "source": [
    "# Les tuples\n",
    "- Les tuples sont des objets **non mutables**. On ne peut pas modifier directement une valeur.\n",
    "- Les objets peuvent être mutables.\n",
    "- On accède aux éléments par leur index.\n",
    "- Ils fonctionnent le plus souvent comme les listes. En cas de non possibilité, convertir en liste."
   ]
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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## I) Définition"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### a) Définition simple"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(1, 2, 'a')\n",
      "2\n"
     ]
    }
   ],
   "source": [
    "# un tuple simple\n",
    "t=(1,2,\"a\")\n",
    "print(t)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "()\n"
     ]
    }
   ],
   "source": [
    "# un tuple vide\n",
    "t=()\n",
    "print(t)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(5,)\n"
     ]
    }
   ],
   "source": [
    "#  un tuple à un élément\n",
    "t=(5,)\n",
    "print(t)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### b) À partir d'une liste"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(1, 2, 3, 4)\n"
     ]
    }
   ],
   "source": [
    "L=[1,2,3,4]\n",
    "t =tuple(L)\n",
    "print(t)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## II) Utilisations des tuples"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2\n",
      "3\n",
      "5\n"
     ]
    }
   ],
   "source": [
    "# pour initialiser plusieurs valeurs. Noter qu'on peut se passer des parenthèses\n",
    "#(a,b,c)=(2,4,5)\n",
    "a,b,c=2,3,5\n",
    "print(a)\n",
    "print(b)\n",
    "print(c)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "5\n",
      "3\n"
     ]
    }
   ],
   "source": [
    "#Pour intervertir deux valeurs\n",
    "a=3\n",
    "b=5\n",
    "#(a,b)=(b,a)\n",
    "a,b=b,a\n",
    "print(a)\n",
    "print(b)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Clé = a ; Valeur = 1 \n",
      "Clé = b ; Valeur = 2 \n",
      "Clé = c ; Valeur = 3 \n"
     ]
    }
   ],
   "source": [
    "#Pour récupérer les clés et les valeurs d'un dictionnaire\n",
    "d=dict(a=1,b=2,c=3)\n",
    "for (c,v) in d.items() :\n",
    "    print(f\"Clé = {c} ; Valeur = {v} \")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n",
      "2\n",
      "3\n",
      "4\n",
      "5\n"
     ]
    }
   ],
   "source": [
    "# avec la boucle for\n",
    "t=(1,2,3,4,5)\n",
    "for k in t :\n",
    "    print(k)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(2, 4, 6, 8, 10)\n"
     ]
    }
   ],
   "source": [
    "# avec une expression génératrice\n",
    "t=(1,2,3,4,5)\n",
    "t_carre = tuple(k*2 for k in t)\n",
    "print(t_carre)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n"
     ]
    }
   ],
   "source": [
    "# accès à un élément\n",
    "t=(1,2,3,4,5)\n",
    "print(t[0])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
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   "cell_type": "code",
   "execution_count": null,
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   "source": []
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  {
   "cell_type": "code",
   "execution_count": null,
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