{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "f = 123.456"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "123\n"
     ]
    }
   ],
   "source": [
    "print(round(f))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<class 'int'>\n"
     ]
    }
   ],
   "source": [
    "print(type(round(f)))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "123.5\n"
     ]
    }
   ],
   "source": [
    "print(round(f, 1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "123.46\n"
     ]
    }
   ],
   "source": [
    "print(round(f, 2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "120.0\n"
     ]
    }
   ],
   "source": [
    "print(round(f, -1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "100.0\n"
     ]
    }
   ],
   "source": [
    "print(round(f, -2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "123.0\n"
     ]
    }
   ],
   "source": [
    "print(round(f, 0))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<class 'float'>\n"
     ]
    }
   ],
   "source": [
    "print(type(round(f, 0)))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "i = 99518"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "99518\n"
     ]
    }
   ],
   "source": [
    "print(round(i))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "99518\n"
     ]
    }
   ],
   "source": [
    "print(round(i, 2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "99520\n"
     ]
    }
   ],
   "source": [
    "print(round(i, -1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "99500\n"
     ]
    }
   ],
   "source": [
    "print(round(i, -2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "100000\n"
     ]
    }
   ],
   "source": [
    "print(round(i, -3))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0.4 => 0\n",
      "0.5 => 0\n",
      "0.6 => 1\n"
     ]
    }
   ],
   "source": [
    "print('0.4 =>', round(0.4))\n",
    "print('0.5 =>', round(0.5))\n",
    "print('0.6 =>', round(0.6))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "4 => 0\n",
      "5 => 0\n",
      "6 => 10\n"
     ]
    }
   ],
   "source": [
    "print('4 =>', round(4, -1))\n",
    "print('5 =>', round(5, -1))\n",
    "print('6 =>', round(6, -1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0.5 => 0\n",
      "1.5 => 2\n",
      "2.5 => 2\n",
      "3.5 => 4\n",
      "4.5 => 4\n"
     ]
    }
   ],
   "source": [
    "print('0.5 =>', round(0.5))\n",
    "print('1.5 =>', round(1.5))\n",
    "print('2.5 =>', round(2.5))\n",
    "print('3.5 =>', round(3.5))\n",
    "print('4.5 =>', round(4.5))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0.05 => 0.1\n",
      "0.15 => 0.1\n",
      "0.25 => 0.2\n",
      "0.35 => 0.3\n",
      "0.45 => 0.5\n"
     ]
    }
   ],
   "source": [
    "print('0.05 =>', round(0.05, 1))\n",
    "print('0.15 =>', round(0.15, 1))\n",
    "print('0.25 =>', round(0.25, 1))\n",
    "print('0.35 =>', round(0.35, 1))\n",
    "print('0.45 =>', round(0.45, 1))"
   ]
  }
 ],
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   "display_name": "Python 3",
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   "file_extension": ".py",
   "mimetype": "text/x-python",
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   "pygments_lexer": "ipython3",
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