groupby.ipynb

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      "G1 groupby(\"X\") GROUPS {'A': [0, 2], 'B': [1, 3]}\n",
      "\n",
      "\t[$K] -- [$V] || [A] -- [<class 'pandas.core.frame.DataFrame'>]\n",
      "\n",
      "\t[$K] -- [$V] || [B] -- [<class 'pandas.core.frame.DataFrame'>]\n",
      "\n",
      "G2 groupby([\"X\"]) GROUPS {'A': [0, 2], 'B': [1, 3]}\n",
      "\n",
      "\t[$K] -- [$V] || [('A',)] -- [<class 'pandas.core.frame.DataFrame'>]\n",
      "\n",
      "\t[$K] -- [$V] || [('B',)] -- [<class 'pandas.core.frame.DataFrame'>]\n"
     ]
    }
   ],
   "source": [
    "import pandas as pd\n",
    "\n",
    "df1 = pd.DataFrame({\"X\": [\"A\", \"B\", \"A\", \"B\"], \"Y\": [1, 4, 3, 2]})\n",
    "\n",
    "g1 = df1.groupby(\"X\")\n",
    "print(\"G1 groupby(\\\"X\\\") GROUPS\", g1.groups)\n",
    "for k, v in g1:\n",
    "    print(\"\\n\\t[$K] -- [$V] || [{0}] -- [{1}]\".format(k, type(v)))\n",
    "    \n",
    "g2 = df1.groupby([\"X\"])\n",
    "print(\"\\nG2 groupby([\\\"X\\\"]) GROUPS\", g2.groups)\n",
    "for k, v in g2:\n",
    "    print(\"\\n\\t[$K] -- [$V] || [{0}] -- [{1}]\".format(k, type(v)))"
   ]
  }
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