#4Revisiting Python.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "6c997920",
   "metadata": {},
   "source": [
    "# If...elif...else"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "dd0b4598",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "4\n",
      "5\n",
      "a is less than b\n"
     ]
    }
   ],
   "source": [
    "a = int(input())\n",
    "b = int(input())\n",
    "if(a<b):\n",
    "    print(\"a is less than b\")\n",
    "elif(a>b):\n",
    "    print(\"a is greator than b\")\n",
    "else:\n",
    "    print(\"a and b are same\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6c0a4ed1",
   "metadata": {},
   "source": [
    "# Short Hand If"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "f072d6a0",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "wohoo...\n"
     ]
    }
   ],
   "source": [
    "if 20>10:print(\"wohoo...\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "cdd06e7b",
   "metadata": {},
   "source": [
    "# Short Hand If...Else"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "4e07007f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Hurray......!\n"
     ]
    }
   ],
   "source": [
    "print(\"wohoooo........\") if 10>20 else print(\"Hurray......!\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "e920ddc7",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "y\n"
     ]
    }
   ],
   "source": [
    "# To check which number is smaller\n",
    "\n",
    "z = 666\n",
    "y = 90\n",
    "\n",
    "print(\"z\") if z < y else print(\"=\") if z == y else print(\"y\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "691e3b9f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "z is greator than y\n"
     ]
    }
   ],
   "source": [
    "if not z<y:\n",
    "    print(\"z is greator than y\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8de160c9",
   "metadata": {},
   "source": [
    "### if statements inside if statements are nested-if statements.\n",
    "### Pass Statements\n",
    "###### If statement with no content, then pass statement can be used to avoid getting an error."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "a0864b10",
   "metadata": {},
   "source": [
    "## Python Loops\n",
    "### 2 primitive loops\n",
    "##### - while loop\n",
    "##### - for loop\n"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1fdda9df",
   "metadata": {},
   "source": [
    "### While loop execute a set of statements as long as a condition is true."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "9499772a",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n",
      "2\n",
      "3\n",
      "4\n",
      "5\n"
     ]
    }
   ],
   "source": [
    "i = 1\n",
    "while i < 6:\n",
    "  print(i)\n",
    "  i += 1"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5b4c7f52",
   "metadata": {},
   "source": [
    "## The break Statement\n",
    "#### With the break statement we can stop the loop even if the while condition is true"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "04d2dfd2",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n",
      "2\n",
      "3\n"
     ]
    }
   ],
   "source": [
    "i = 1\n",
    "while i < 6:\n",
    "  print(i)\n",
    "  if i == 3:\n",
    "    break\n",
    "  i += 1"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "72532c4e",
   "metadata": {},
   "source": [
    "## The continue Statement\n",
    "#### With the continue statement we can stop the current iteration, and continue with the next:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "e3fbb5b8",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2\n",
      "4\n",
      "5\n",
      "6\n"
     ]
    }
   ],
   "source": [
    "i = 1\n",
    "while i < 6:\n",
    "  i += 1\n",
    "  if i == 3:\n",
    "    continue\n",
    "  print(i)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "4fa5e566",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1\n",
      "2\n",
      "3\n",
      "4\n",
      "5\n",
      "i is no longer less than 6\n"
     ]
    }
   ],
   "source": [
    "# else statement\n",
    "i = 1\n",
    "while i < 6:\n",
    "  print(i)\n",
    "  i += 1\n",
    "else:\n",
    "  print(\"i is no longer less than 6\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "9357fdda",
   "metadata": {},
   "source": [
    "# for loop\n",
    "#### A for loop is used for iterating over a sequence (that is either a list, a tuple, a dictionary, a set, or a string)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "e5afaaab",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b\n",
      "a\n",
      "n\n",
      "a\n",
      "n\n",
      "a\n"
     ]
    }
   ],
   "source": [
    "for x in \"banana\":\n",
    "  print(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "id": "8b737c97",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "apple\n",
      "banana\n"
     ]
    }
   ],
   "source": [
    "fruits = [\"apple\", \"banana\", \"cherry\"]\n",
    "for x in fruits:\n",
    "  print(x)\n",
    "  if x == \"banana\":\n",
    "    break"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "b453b30c",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "apple\n"
     ]
    }
   ],
   "source": [
    "fruits = [\"apple\", \"banana\", \"cherry\"]\n",
    "for x in fruits:\n",
    "  if x == \"banana\":\n",
    "    break\n",
    "  print(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "1904507f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "apple\n",
      "cherry\n"
     ]
    }
   ],
   "source": [
    "fruits = [\"apple\", \"banana\", \"cherry\"]\n",
    "for x in fruits:\n",
    "  if x == \"banana\":\n",
    "    continue\n",
    "  print(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "id": "85252cf7",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n",
      "2\n",
      "3\n",
      "4\n",
      "5\n"
     ]
    }
   ],
   "source": [
    "#Range Function\n",
    "for x in range(6):\n",
    "  print(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "69d445cd",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2\n",
      "5\n",
      "8\n",
      "11\n",
      "14\n",
      "17\n",
      "20\n",
      "23\n",
      "26\n",
      "29\n"
     ]
    }
   ],
   "source": [
    "for x in range(2, 30, 3):\n",
    "  print(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "043feb9b",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n",
      "2\n",
      "3\n",
      "4\n",
      "5\n",
      "Finally finished!\n"
     ]
    }
   ],
   "source": [
    "for x in range(6):\n",
    "  print(x)\n",
    "else:\n",
    "  print(\"Finally finished!\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "767582f0",
   "metadata": {},
   "source": [
    "#### The else block will NOT be executed if the loop is stopped by a break statement"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "bf3c7a11",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "red apple\n",
      "red banana\n",
      "red cherry\n",
      "big apple\n",
      "big banana\n",
      "big cherry\n",
      "tasty apple\n",
      "tasty banana\n",
      "tasty cherry\n"
     ]
    }
   ],
   "source": [
    "#Nested \n",
    "adj = [\"red\", \"big\", \"tasty\"]\n",
    "fruits = [\"apple\", \"banana\", \"cherry\"]\n",
    "\n",
    "for x in adj:\n",
    "  for y in fruits:\n",
    "    print(x, y)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "45442681",
   "metadata": {},
   "source": [
    "## Pass statement"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "ae2a50f8",
   "metadata": {},
   "source": [
    "##### for loops cannot be empty, but if you for some reason have a for loop with no content, put in the pass  \n",
    "##### statement to avoid getting an error."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "205953cd",
   "metadata": {},
   "outputs": [],
   "source": [
    "for x in [0, 1, 2]:\n",
    "  pass"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3 (ipykernel)",
   "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": "3.10.2"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 5
}