TP_fonctions.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## TP Fonctions Python"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Exercice 1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "97"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ord('a')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "65"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ord('A')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Z'"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "chr(90)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'z'"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "chr(122)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "ABCDEFGHIJKLMNOPQRSTUVWXYZ\n"
     ]
    }
   ],
   "source": [
    "alphabet=''\n",
    "for i in range(65,91):\n",
    "    alphabet = alphabet + chr(i)\n",
    "print(alphabet)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "abcdefghijklmnopqrstuvwxyz\n"
     ]
    }
   ],
   "source": [
    "def creer_alphabet(debut):\n",
    "    alphabet=''\n",
    "    for i in range(debut,debut+26):\n",
    "        alphabet += chr(i)\n",
    "    return alphabet\n",
    "\n",
    "chaine = creer_alphabet(97)\n",
    "print(chaine)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Exercice 2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "def compte_occurence(caractere,mot):\n",
    "    '''la fonction prend en argument deux string : caractere et mot\n",
    "    et renvoie un integer l occurence de caractere dans mot'''\n",
    "    nb_occur = 0\n",
    "    for lettre in mot:\n",
    "        if lettre == caractere :\n",
    "            nb_occur += 1\n",
    "    return nb_occur       "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Help on function compte_occurence in module __main__:\n",
      "\n",
      "compte_occurence(caractere, mot)\n",
      "    la fonction prend en argument deux string : caractere et mot\n",
      "    et renvoie un integer l occurence de caractere dans mot\n",
      "\n"
     ]
    }
   ],
   "source": [
    "help(compte_occurence)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 14,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "compte_occurence('e','numérique')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "4"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "compte_occurence('i','mississipi')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "compte_occurence('y','nsi')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [],
   "source": [
    "assert compte_occurence('y','nsi')==0 \n",
    "assert compte_occurence('e','numérique')==1\n",
    "assert compte_occurence('i','mississipi')==4"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Exercice 3\n",
    "Ecrire une fonction majuscule qui transforme une chaine écrite en minuscule sans accent en une chaine en majuscule"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [],
   "source": [
    "def majuscule(chaine1):\n",
    "    \n",
    "    \n",
    "    return chaine2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "assert majuscule('nsi')=='NSI'\n",
    "assert majuscule('informatique')=='INFORMATIQUE'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Tester avec d'autres chaines"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Exercice 4\n",
    "Ecrire une fonction `miroir`qui prend en argument une chaine de caractères sans accent en minuscule et qui renvoie une nouvelle chaine où chaque caractères prend le rang de la lettre dans l'alphabet inversé"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [],
   "source": [
    "def miroir(chaine1):\n",
    "    \n",
    "    return chaine2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "assert miroir('abcd')=='zyxw'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Tester en dessous avec d'autres chaines"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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