12.Class.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Parrot:\n",
    "\n",
    "    # class attribute\n",
    "    species = \"bird\"\n",
    "\n",
    "    # instance attribute\n",
    "    def __init__(self, name, age):\n",
    "        self.name = name\n",
    "        self.age = age"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "blu = Parrot(\"Blu\", 10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "woo = Parrot(\"Woo\", 15)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Blu is a bird\n"
     ]
    }
   ],
   "source": [
    "print(\"Blu is a {}\".format(blu.__class__.species))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Woo is also a bird\n"
     ]
    }
   ],
   "source": [
    "print(\"Woo is also a {}\".format(woo.__class__.species))\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Blu is 10 years old\n"
     ]
    }
   ],
   "source": [
    "print(\"{} is {} years old\".format( blu.name, blu.age))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Woo is 15 years old\n"
     ]
    }
   ],
   "source": [
    "print(\"{} is {} years old\".format( woo.name, woo.age))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Parrot:\n",
    "    \n",
    "    # instance attributes\n",
    "    def __init__(self, name, age):\n",
    "        self.name = name\n",
    "        self.age = age\n",
    "    \n",
    "    # instance method\n",
    "    def sing(self, song):\n",
    "        return \"{} sings {}\".format(self.name, song)\n",
    "\n",
    "    def dance(self):\n",
    "        return \"{} is now dancing\".format(self.name)\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "blu = Parrot(\"Blu\", 10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Blu sings 'Happy'\n"
     ]
    }
   ],
   "source": [
    "print(blu.sing(\"'Happy'\"))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Blu is now dancing\n"
     ]
    }
   ],
   "source": [
    "print(blu.dance())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [],
   "source": [
    "#parent class\n",
    "class Bird:\n",
    "    \n",
    "    def __init__(self):\n",
    "        print(\"Bird is ready\")\n",
    "\n",
    "    def whoisThis(self):\n",
    "        print(\"Bird\")\n",
    "\n",
    "    def swim(self):\n",
    "        print(\"Swim faster\")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Child Class\n",
    "class Penguin(Bird):\n",
    "\n",
    "    def __init__(self):\n",
    "        # call super() function\n",
    "        super().__init__()\n",
    "        print(\"Penguin is ready\")\n",
    "\n",
    "    def whoisThis(self):\n",
    "        print(\"Penguin\")\n",
    "\n",
    "    def run(self):\n",
    "        print(\"Run faster\")\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Bird is ready\n",
      "Penguin is ready\n"
     ]
    }
   ],
   "source": [
    "peggy = Penguin()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Penguin\n"
     ]
    }
   ],
   "source": [
    "peggy.whoisThis()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Swim faster\n"
     ]
    }
   ],
   "source": [
    "peggy.swim()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Run faster\n"
     ]
    }
   ],
   "source": [
    "peggy.run()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Computer:\n",
    "\n",
    "    def __init__(self):\n",
    "        self.__maxprice = 900\n",
    "\n",
    "    def sell(self):\n",
    "        print(\"Selling Price: {}\".format(self.__maxprice))\n",
    "\n",
    "    def setMaxPrice(self, price):\n",
    "        self.__maxprice = price\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Selling Price: 900\n"
     ]
    }
   ],
   "source": [
    "c = Computer()\n",
    "c.sell()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Selling Price: 900\n"
     ]
    }
   ],
   "source": [
    "c.__maxprice = 1000\n",
    "c.sell()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Selling Price: 1000\n"
     ]
    }
   ],
   "source": [
    "c.setMaxPrice(1000)\n",
    "c.sell()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Parrot:\n",
    "\n",
    "    def fly(self):\n",
    "        print(\"Parrot can fly\")\n",
    "    \n",
    "    def swim(self):\n",
    "        print(\"Parrot can't swim\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Penguin:\n",
    "\n",
    "    def fly(self):\n",
    "        print(\"Penguin can't fly\")\n",
    "    \n",
    "    def swim(self):\n",
    "        print(\"Penguin can swim\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [],
   "source": [
    "def flying_test(bird):\n",
    "    bird.fly()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {},
   "outputs": [],
   "source": [
    "blu = Parrot()\n",
    "peggy = Penguin()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Parrot can fly\n",
      "Penguin can't fly\n"
     ]
    }
   ],
   "source": [
    "flying_test(blu)\n",
    "flying_test(peggy)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [],
   "source": [
    "class CSStudent: \n",
    "    stream = 'cse'                  # Class Variable \n",
    "    def __init__(self,name,roll): \n",
    "        self.name = name            # Instance Variable \n",
    "        self.roll = roll            # Instance Variable "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "metadata": {},
   "outputs": [],
   "source": [
    "a = CSStudent('Geek', 1) \n",
    "b = CSStudent('Nerd', 2) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "cse\n"
     ]
    }
   ],
   "source": [
    "print(a.stream)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "cse\n"
     ]
    }
   ],
   "source": [
    "print(b.stream)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Geek\n"
     ]
    }
   ],
   "source": [
    "print(a.name)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Nerd\n"
     ]
    }
   ],
   "source": [
    "print(b.name)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n"
     ]
    }
   ],
   "source": [
    "print(a.roll)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2\n"
     ]
    }
   ],
   "source": [
    "print(b.roll)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "cse\n"
     ]
    }
   ],
   "source": [
    "print(CSStudent.stream) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {},
   "outputs": [],
   "source": [
    "class CSStudent: \n",
    "    stream = 'cse'     # Class Variable  \n",
    "    def __init__(self, name, roll): \n",
    "        self.name = name  \n",
    "        self.roll = roll \n",
    "  "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {},
   "outputs": [],
   "source": [
    "a = CSStudent(\"Geek\", 1) \n",
    "b = CSStudent(\"Nerd\", 2) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "a.stream = cse\n"
     ]
    }
   ],
   "source": [
    "print(\"a.stream =\", a.stream) \n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b.stream = cse\n"
     ]
    }
   ],
   "source": [
    "print(\"b.stream =\", b.stream) \n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {},
   "outputs": [],
   "source": [
    "a.stream = \"ece\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "a.stream = ece\n"
     ]
    }
   ],
   "source": [
    "print(\"a.stream =\", a.stream) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 42,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b.stream = cse\n"
     ]
    }
   ],
   "source": [
    "print(\"b.stream =\", b.stream) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 43,
   "metadata": {},
   "outputs": [],
   "source": [
    "class CSStudent: \n",
    "    stream = 'cse'     # Class Variable  \n",
    "    def __init__(self, name, roll): \n",
    "        self.name = name  \n",
    "        self.roll = roll "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 44,
   "metadata": {},
   "outputs": [],
   "source": [
    "a = CSStudent(\"check\", 3) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 45,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "a.stream = cse\n"
     ]
    }
   ],
   "source": [
    "print(\"a.stream =\", a.stream) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 46,
   "metadata": {},
   "outputs": [],
   "source": [
    "CSStudent.stream = \"mec\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 47,
   "metadata": {},
   "outputs": [],
   "source": [
    "b = CSStudent(\"carter\", 4) \n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 48,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "a.stream = mec\n"
     ]
    }
   ],
   "source": [
    "print(\"a.stream =\", a.stream) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 49,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b.stream = mec\n"
     ]
    }
   ],
   "source": [
    "print(\"b.stream =\", b.stream) "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 50,
   "metadata": {},
   "outputs": [],
   "source": [
    "class MyNewClass:\n",
    "    '''This is a docstring. I have created a new class'''\n",
    "    pass"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 51,
   "metadata": {},
   "outputs": [],
   "source": [
    "class MyClass:\n",
    "    \"This is my second class\"\n",
    "    a = 10\n",
    "    def func(self):\n",
    "        print('Hello')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 52,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "10\n"
     ]
    }
   ],
   "source": [
    "print(MyClass.a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<function MyClass.func at 0x7f1ae8113c80>\n"
     ]
    }
   ],
   "source": [
    "print(MyClass.func)\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "This is my second class\n"
     ]
    }
   ],
   "source": [
    "print(MyClass.__doc__)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 55,
   "metadata": {},
   "outputs": [],
   "source": [
    "ob = MyClass()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 56,
   "metadata": {},
   "outputs": [],
   "source": [
    "class MyClass:\n",
    "    \"This is my second class\"\n",
    "    a = 10\n",
    "    def func(self):\n",
    "        print('Hello')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 57,
   "metadata": {},
   "outputs": [],
   "source": [
    "ob = MyClass()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 58,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<function MyClass.func at 0x7f1ae8109b70>\n"
     ]
    }
   ],
   "source": [
    "print(MyClass.func)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 59,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<bound method MyClass.func of <__main__.MyClass object at 0x7f1ae8121390>>\n"
     ]
    }
   ],
   "source": [
    "print(ob.func)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 60,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Hello\n"
     ]
    }
   ],
   "source": [
    "ob.func()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 61,
   "metadata": {},
   "outputs": [],
   "source": [
    "class ComplexNumber:\n",
    "    def __init__(self,r = 0,i = 0):\n",
    "        self.real = r\n",
    "        self.imag = i\n",
    "\n",
    "    def getData(self):\n",
    "        print(\"{0}+{1}j\".format(self.real,self.imag))\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 62,
   "metadata": {},
   "outputs": [],
   "source": [
    "c1 = ComplexNumber(2,3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 63,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<__main__.ComplexNumber at 0x7f1ae8170ac8>"
      ]
     },
     "execution_count": 63,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "c1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 64,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2+3j\n"
     ]
    }
   ],
   "source": [
    "c1.getData()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 65,
   "metadata": {},
   "outputs": [],
   "source": [
    "c2 = ComplexNumber(5)\n",
    "c2.attr = 10"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 66,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(5, 0, 10)\n"
     ]
    }
   ],
   "source": [
    "print((c2.real, c2.imag, c2.attr))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 67,
   "metadata": {},
   "outputs": [
    {
     "ename": "AttributeError",
     "evalue": "'ComplexNumber' object has no attribute 'attr'",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mAttributeError\u001b[0m                            Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-67-2d321b0fd63c>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mc1\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mattr\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mAttributeError\u001b[0m: 'ComplexNumber' object has no attribute 'attr'"
     ]
    }
   ],
   "source": [
    "c1.attr"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 68,
   "metadata": {},
   "outputs": [],
   "source": [
    "c1 = ComplexNumber(2,3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 69,
   "metadata": {},
   "outputs": [],
   "source": [
    "del c1.imag"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 70,
   "metadata": {},
   "outputs": [
    {
     "ename": "AttributeError",
     "evalue": "'ComplexNumber' object has no attribute 'imag'",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mAttributeError\u001b[0m                            Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-70-770616645dd4>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mc1\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mgetData\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m<ipython-input-61-7cce828f0a04>\u001b[0m in \u001b[0;36mgetData\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m      5\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      6\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0mgetData\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 7\u001b[0;31m         \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"{0}+{1}j\"\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mformat\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mreal\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mimag\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mAttributeError\u001b[0m: 'ComplexNumber' object has no attribute 'imag'"
     ]
    }
   ],
   "source": [
    "c1.getData()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 71,
   "metadata": {},
   "outputs": [],
   "source": [
    "del ComplexNumber.getData"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 72,
   "metadata": {},
   "outputs": [
    {
     "ename": "AttributeError",
     "evalue": "'ComplexNumber' object has no attribute 'getData'",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mAttributeError\u001b[0m                            Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-72-770616645dd4>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mc1\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mgetData\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mAttributeError\u001b[0m: 'ComplexNumber' object has no attribute 'getData'"
     ]
    }
   ],
   "source": [
    "c1.getData()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 73,
   "metadata": {},
   "outputs": [],
   "source": [
    "c1 = ComplexNumber(1,3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 74,
   "metadata": {},
   "outputs": [],
   "source": [
    "del c1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 75,
   "metadata": {},
   "outputs": [
    {
     "ename": "NameError",
     "evalue": "name 'c1' is not defined",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-75-5348681b35c2>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mc1\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mNameError\u001b[0m: name 'c1' is not defined"
     ]
    }
   ],
   "source": [
    "c1"
   ]
  }
 ],
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