{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Decorators"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [],
   "source": [
    "def uppercase_decorator(function):\n",
    "    def wrapper(*args,**kwargs):\n",
    "        func = function(*args,**kwargs)\n",
    "        make_uppercase = func.upper()\n",
    "        return make_uppercase\n",
    "    return wrapper"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [],
   "source": [
    "def func():\n",
    "    return \"hello world\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [],
   "source": [
    "func = uppercase_decorator(func)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'HELLO WORLD'"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "func()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [],
   "source": [
    "@uppercase_decorator\n",
    "def func1():\n",
    "    return \"hello world 1\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'HELLO WORLD 1'"
      ]
     },
     "execution_count": 21,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "func1()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## timer example"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [],
   "source": [
    "from time import time,sleep\n",
    "\n",
    "def timeit(f):\n",
    "    def wrapper(*args,**kwargs):\n",
    "        start = time()\n",
    "        val = f(*args,**kwargs)\n",
    "        end = time()\n",
    "        \n",
    "        print(\"total time taken for this function :\",f.__name__,\" is\",end-start)\n",
    "        return val\n",
    "    return wrapper\n",
    "\n",
    "@timeit\n",
    "def slow_operation():\n",
    "    sleep(3)\n",
    "    return \"done\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "total time taken for this function : slow_operation  is 3.0030782222747803\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "'done'"
      ]
     },
     "execution_count": 25,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "slow_operation()"
   ]
  }
 ],
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