Function Notes.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**No parameter**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "def writeHello():\n",
    "    print(\"Hello\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Hello\n"
     ]
    }
   ],
   "source": [
    "writeHello()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Parameters**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "def addition(a,b,c):\n",
    "    print(\"Result\",a+b+c)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Result 16\n"
     ]
    }
   ],
   "source": [
    "addition(3,5,8)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Default parameters**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "def getInputNumber(num = 0):\n",
    "    print(\"number\",num)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "number 3\n"
     ]
    }
   ],
   "source": [
    "getInputNumber(3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "number 0\n"
     ]
    }
   ],
   "source": [
    "getInputNumber()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Args**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [],
   "source": [
    "def addition(*nums):\n",
    "    print(\"parameters\",nums)\n",
    "    result = 0\n",
    "    for i in nums:\n",
    "        result +=i\n",
    "    print(\"result\",result)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "parameters (1, 2, 3, 4, 5, 6)\n",
      "result 21\n"
     ]
    }
   ],
   "source": [
    "addition(1,2,3,4,5,6)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Global value change**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [],
   "source": [
    "x = 4"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [],
   "source": [
    "def fonk1(value):\n",
    "    print(\"value 1 : \",value)\n",
    "    value = 5\n",
    "    print(\"value 2 : \",value)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "x value before function call  4\n",
      "value 1 :  4\n",
      "value 2 :  5\n",
      "x value after function call  4\n"
     ]
    }
   ],
   "source": [
    "print(\"x value before function call \",x)\n",
    "fonk1(x)\n",
    "print(\"x value after function call \",x)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Note**: Global value not change after processing inside function"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Change** global value"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [],
   "source": [
    "y = 4"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [],
   "source": [
    "def fonk2(value):\n",
    "    print(\"value 1 : \",value)\n",
    "    value = 5\n",
    "    \"\"\" global \"\"\"\n",
    "    global y    \n",
    "    y = value\n",
    "    print(\"value 2 : \",value)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "y value before function call 4\n",
      "value 1 :  4\n",
      "value 2 :  5\n",
      "y value after function call  5\n"
     ]
    }
   ],
   "source": [
    "print(\"y value before function call\",y)\n",
    "fonk2(y)\n",
    "print(\"y value after function call \",y)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Global value if and loop**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "10\n",
      "10\n"
     ]
    }
   ],
   "source": [
    "if True:\n",
    "    t = 10\n",
    "    print(t)\n",
    "\n",
    "print(t)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "10\n",
      "10\n"
     ]
    }
   ],
   "source": [
    "while True:\n",
    "    deger =  10\n",
    "    print(deger)\n",
    "    break\n",
    "\n",
    "print(deger)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Note:** Values in the if and loop behave as global variable"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "---"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**kwargs**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "metadata": {},
   "outputs": [],
   "source": [
    "def func1(**kwargs):\n",
    "    print(kwargs)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'isim': 'Hakan', 'soyisim': 'Candan', 'numara': 12345}\n"
     ]
    }
   ],
   "source": [
    "func1(isim = \"Hakan\", soyisim = \"Candan\", numara = 12345)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Note**: key,value flexible parameter"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'isim': 'Yusuf', 'soyisim': 'Aslan', 'numara': 555666, 'eposta': 'yaslan@hotmail.com'}\n"
     ]
    }
   ],
   "source": [
    "func1(isim = \"Yusuf\", soyisim = \"Aslan\", numara = 555666,eposta=\"yaslan@hotmail.com\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "metadata": {},
   "outputs": [],
   "source": [
    "def func2(**kwargs):\n",
    "    for i,j in kwargs.items():\n",
    "        print(\"Arg name :\",i,\"Arg Value:\",j)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Arg name : isim Arg Value: Yusuf\n",
      "Arg name : soyisim Arg Value: Aslan\n",
      "Arg name : numara Arg Value: 555666\n",
      "Arg name : eposta Arg Value: yaslan@hotmail.com\n"
     ]
    }
   ],
   "source": [
    "func2(isim = \"Yusuf\", soyisim = \"Aslan\", numara = 555666,eposta=\"yaslan@hotmail.com\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Args** and **Kwargs**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {},
   "outputs": [],
   "source": [
    "def func3(*args,**kwargs):\n",
    "    for i in args:\n",
    "        print(\"Args:\",i)\n",
    "    print(\"------------------------------\")\n",
    "    for i ,j in kwargs.items():\n",
    "        print(\"key:\",i,\"value:\",j)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Args: 1\n",
      "Args: 2\n",
      "Args: 3\n",
      "Args: 4\n",
      "Args: 5\n",
      "Args: 6\n",
      "Args: 7\n",
      "------------------------------\n",
      "key: isim value: Serdar\n",
      "key: soyisim value: Alkan\n",
      "key: numara value: 12345\n"
     ]
    }
   ],
   "source": [
    "func3(1,2,3,4,5,6,7,isim = \"Serdar\",soyisim = \"Alkan\", numara = 12345)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "---"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Nested Function**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {},
   "outputs": [],
   "source": [
    "def sayHi(name):\n",
    "    print(\"Hello\",name)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {},
   "outputs": [],
   "source": [
    "functHi = sayHi   # assign function"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<function __main__.sayHi(name)>"
      ]
     },
     "execution_count": 39,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "functHi   # as a function"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Hello Cihan\n"
     ]
    }
   ],
   "source": [
    "functHi(\"Cihan\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "metadata": {},
   "outputs": [],
   "source": [
    "del sayHi   # delete sayHi function"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 42,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Hello Cihan\n"
     ]
    }
   ],
   "source": [
    "functHi(\"Cihan\")  # functHi still working"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "---"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 43,
   "metadata": {},
   "outputs": [],
   "source": [
    "def fonksiyon():\n",
    "    def fonksiyon2():\n",
    "        print(\"fonksiyon2 call\")\n",
    "    print(\"fonksiyon call\")\n",
    "    fonksiyon2() # fonksiyon2 call"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 44,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "fonksiyon call\n",
      "fonksiyon2 call\n"
     ]
    }
   ],
   "source": [
    "fonksiyon() # fonksiyon call"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 47,
   "metadata": {},
   "outputs": [],
   "source": [
    "def func1(*args): # args\n",
    "    \n",
    "    result = 0\n",
    "    def addition(args): # args\n",
    "        additionResult = 0\n",
    "        for i in args:\n",
    "            additionResult += i\n",
    "        return additionResult\n",
    "    \n",
    "    def multiplication(v):\n",
    "        print(\"result : \",v*v)\n",
    "    \n",
    "    result = addition(args)\n",
    "    multiplication(result)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 48,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "result :  100\n"
     ]
    }
   ],
   "source": [
    "func1(1,2,3,4)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Nice example**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 53,
   "metadata": {},
   "outputs": [],
   "source": [
    "def func1(processName):\n",
    "    \n",
    "    def addition(*args):\n",
    "        addResult = 0\n",
    "        for i in args:\n",
    "            addResult += i\n",
    "        return addResult\n",
    "        \n",
    "    def multiplication(*args):\n",
    "        multResult = 1\n",
    "        for i in args:\n",
    "            multResult *= i\n",
    "        return multResult\n",
    "    \n",
    "    if processName == \"addition\":\n",
    "        return addition\n",
    "    else:\n",
    "        return multiplication"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "metadata": {},
   "outputs": [],
   "source": [
    "example1 = func1(\"addition\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 55,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<function __main__.func1.<locals>.addition(*args)>"
      ]
     },
     "execution_count": 55,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "example1 ## this function is addition"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 56,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "6"
      ]
     },
     "execution_count": 56,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "example1(1,2,3)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "---"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "**Nice Example 2**"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 57,
   "metadata": {},
   "outputs": [],
   "source": [
    "def add(a,b):\n",
    "    return a + b\n",
    "def sub(a,b):\n",
    "    return a-b\n",
    "def mult(a,b):\n",
    "    return a * b\n",
    "def div(a,b):\n",
    "    return a / b"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 58,
   "metadata": {},
   "outputs": [],
   "source": [
    "def mainFunction(func1,func2,func3,func4,processName): \n",
    "    if (processName == \"add\"):\n",
    "        print(func1(3,4))\n",
    "    elif (processName == \"sub\"):\n",
    "        print(func2(10,3))\n",
    "    elif (processName == \"mult\"):\n",
    "        print(func3(10,3))\n",
    "    elif (processName == \"div\"):\n",
    "        print(func4(10,4))\n",
    "    else:\n",
    "        print(\"process not found...\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 59,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "7\n"
     ]
    }
   ],
   "source": [
    "mainFunction(add,sub,mult,div,\"add\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 60,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "30\n"
     ]
    }
   ],
   "source": [
    "mainFunction(add,sub,mult,div,\"mult\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.7.3"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 4
}