PDSH_180325_3.ipynb

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   "source": [
    "import math"
   ]
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     "data": {
      "text/plain": [
       "0.9092974268256817"
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   "source": [
    "math.sin(2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "-0.4161468365471424"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
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   ],
   "source": [
    "math.cos(2)"
   ]
  },
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   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
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     "text": [
      "['', 'import math', 'math.sin(2)', 'math.cos(2)', 'print(In)']\n"
     ]
    }
   ],
   "source": [
    "print(In)\n",
    "\"\"\"In, Out 이라는 파이썬 변수를 생성한다.\n",
    "In : 명령어를 순서대로 기록하는 리스트 객체\n",
    "Out : 입력변호를 출력값과 매핑하는 딕셔너리 \"\"\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{2: 0.9092974268256817, 3: -0.4161468365471424}"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
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   ],
   "source": [
    "Out"
   ]
  },
  {
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   "execution_count": 6,
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   "outputs": [
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     "data": {
      "text/plain": [
       "1.0"
      ]
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     "execution_count": 6,
     "metadata": {},
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   "source": [
    "\"sin(2)**2 + cos(2)**2 \"\n",
    "Out[2]**2 + Out[3]**2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "1.0\n"
     ]
    }
   ],
   "source": [
    "print(_)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "-0.4161468365471424\n"
     ]
    }
   ],
   "source": [
    "print(__)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0.9092974268256817\n"
     ]
    }
   ],
   "source": [
    "print(___)"
   ]
  },
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   "execution_count": 10,
   "metadata": {},
   "outputs": [
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     "data": {
      "text/plain": [
       "0.9092974268256817"
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     "execution_count": 10,
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   ],
   "source": [
    "_2"
   ]
  },
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   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "ename": "NameError",
     "evalue": "name '_1' 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-11-21553803e553>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0m_1\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mNameError\u001b[0m: name '_1' is not defined"
     ]
    }
   ],
   "source": [
    "_1"
   ]
  },
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   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
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     "data": {
      "text/plain": [
       "-0.4161468365471424"
      ]
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     "execution_count": 12,
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     "output_type": "execute_result"
    }
   ],
   "source": [
    "_3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "ename": "NameError",
     "evalue": "name '_4' 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-13-b8c5da0ddb3f>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0m_4\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mNameError\u001b[0m: name '_4' is not defined"
     ]
    }
   ],
   "source": [
    "_4"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{2: 0.9092974268256817,\n",
       " 3: -0.4161468365471424,\n",
       " 6: 1.0,\n",
       " 10: 0.9092974268256817,\n",
       " 12: -0.4161468365471424}"
      ]
     },
     "execution_count": 14,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Out"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1.0"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "_6"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "math.sin(2)+math.cos(2);"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "False"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "14 in Out"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
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