{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Python Functions\n",
    "## Basic Calculator Function\n",
    "\n",
    "This is my first function that show how to pass 2 args and adds them together using a function"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "def myCalc(x,y, tax = \"No\"):\n",
    "    z = x + y\n",
    "    print(z)\n",
    "    print(\"Taxable:\", tax)\n",
    "   "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Call the myCalc function"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "10\n",
      "Taxable: Yes\n"
     ]
    }
   ],
   "source": [
    "myCalc(7,3, \"Yes\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Import Built in Functions from a Built in Module\n",
    "### These modules and libs are installed by python when you install core"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "# imports\n",
    "import math"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "# variables\n",
    "x = 4\n",
    "y = 9"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "The square root of 4 is 2.0\n",
      "4 raised to the power of 9 is 262144.0\n"
     ]
    }
   ],
   "source": [
    "# operations\n",
    "print(\"The square root of\", x, \"is\", math.sqrt(x))  #2\n",
    "print(x, \"raised to the power of\", y, \"is\", math.pow(x,y))  #4**9"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Defined Functions from a Custom Module"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [],
   "source": [
    "import myModule as mm  # importing a module as a namespace"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Calcuated Values\n",
      "----------------\n",
      "\n",
      "Number of Orders:\n",
      "20\n",
      "\n",
      "End of Report\n"
     ]
    }
   ],
   "source": [
    "mm.reportHeader()\n",
    "print(\"Number of Orders:\")\n",
    "mm.myCalcMultiple(5,4)\n",
    "mm.reportFooter()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Iterative Functions commonly used in loops for, while,switch, ..."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [],
   "source": [
    "def create_contact_names(fname, lname, num_contacts):\n",
    "    contact_names = [] # create an empty list to hold the contact names\n",
    "    for contact_name in range(num_contacts): # range is the iterative function\n",
    "        contact_name = fname + \" \" + lname\n",
    "        contact_names.append(contact_name)\n",
    "    # print(contact_names)  # functional print coming from sub op of the funct\n",
    "    return contact_names"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['bob smith']\n",
      "None\n"
     ]
    }
   ],
   "source": [
    "firstName = input(\"Enter first name: \")\n",
    "lastName = input(\"Enter last name: \")\n",
    "numContactsReturn = int(input(\"Sample Data Size: \"))\n",
    "\n",
    "contact_list = create_contact_names(firstName, lastName, numContactsReturn)\n",
    "print(contact_list)\n",
    "\n",
    "\n"
   ]
  }
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