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{ | |
"cells": [ | |
{ | |
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"metadata": {}, | |
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"## Q. 指定したキーが変わる度にナンバリングしたい\n", | |
"\n", | |
"groupbyで分けたグループにナンバリングするようなイメージ\n", | |
"\n", | |
"```\n", | |
"result:\n", | |
"-------\n", | |
"\tc1\tc2\tc3\tgroup\n", | |
"0\ta\ta\ta\t0\n", | |
"1\ta\ta\ta\t0\n", | |
"2\ta\ta\tb\t1\n", | |
"3\ta\tb\tb\t2\n", | |
"4\ta\tb\tb\t2\n", | |
"5\tb\tb\tc\t3\n", | |
"6\tb\tc\tc\t4\n", | |
"7\tb\tc\tc\t4\n", | |
"8\tb\tc\tc\t4\n", | |
"```\n", | |
"\n", | |
"https://gist.github.com/KazukiOnodera/ed158c161ede48067c475b6406bef330\n", | |
"\n", | |
"## A" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 1, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [], | |
"source": [ | |
"import pandas as pd" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 2, | |
"metadata": { | |
"collapsed": true | |
}, | |
"outputs": [], | |
"source": [ | |
"df = pd.DataFrame([['a', 'a', 'a'],\n", | |
" ['a', 'a', 'a'],\n", | |
" ['a', 'a', 'b'],\n", | |
" ['a', 'b', 'b'],\n", | |
" ['a', 'b', 'b'],\n", | |
" ['b', 'b', 'c'],\n", | |
" ['b', 'c', 'c'],\n", | |
" ['b', 'c', 'c'],\n", | |
" ['b', 'c', 'c']],\n", | |
" columns=['c1','c2','c3'])" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": 3, | |
"metadata": { | |
"collapsed": false | |
}, | |
"outputs": [ | |
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"data": { | |
"text/html": [ | |
"<div>\n", | |
"<table border=\"1\" class=\"dataframe\">\n", | |
" <thead>\n", | |
" <tr style=\"text-align: right;\">\n", | |
" <th></th>\n", | |
" <th>c1</th>\n", | |
" <th>c2</th>\n", | |
" <th>c3</th>\n", | |
" </tr>\n", | |
" </thead>\n", | |
" <tbody>\n", | |
" <tr>\n", | |
" <th>0</th>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>1</th>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>2</th>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" <td>b</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>3</th>\n", | |
" <td>a</td>\n", | |
" <td>b</td>\n", | |
" <td>b</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>4</th>\n", | |
" <td>a</td>\n", | |
" <td>b</td>\n", | |
" <td>b</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>5</th>\n", | |
" <td>b</td>\n", | |
" <td>b</td>\n", | |
" <td>c</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>6</th>\n", | |
" <td>b</td>\n", | |
" <td>c</td>\n", | |
" <td>c</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>7</th>\n", | |
" <td>b</td>\n", | |
" <td>c</td>\n", | |
" <td>c</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>8</th>\n", | |
" <td>b</td>\n", | |
" <td>c</td>\n", | |
" <td>c</td>\n", | |
" </tr>\n", | |
" </tbody>\n", | |
"</table>\n", | |
"</div>" | |
], | |
"text/plain": [ | |
" c1 c2 c3\n", | |
"0 a a a\n", | |
"1 a a a\n", | |
"2 a a b\n", | |
"3 a b b\n", | |
"4 a b b\n", | |
"5 b b c\n", | |
"6 b c c\n", | |
"7 b c c\n", | |
"8 b c c" | |
] | |
}, | |
"execution_count": 3, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"df" | |
] | |
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"execution_count": 4, | |
"metadata": { | |
"collapsed": false | |
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"<div>\n", | |
"<table border=\"1\" class=\"dataframe\">\n", | |
" <thead>\n", | |
" <tr style=\"text-align: right;\">\n", | |
" <th></th>\n", | |
" <th>c1</th>\n", | |
" <th>c2</th>\n", | |
" <th>c3</th>\n", | |
" </tr>\n", | |
" </thead>\n", | |
" <tbody>\n", | |
" <tr>\n", | |
" <th>0</th>\n", | |
" <td>NaN</td>\n", | |
" <td>NaN</td>\n", | |
" <td>NaN</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>1</th>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
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" <tr>\n", | |
" <th>2</th>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>3</th>\n", | |
" <td>a</td>\n", | |
" <td>a</td>\n", | |
" <td>b</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>4</th>\n", | |
" <td>a</td>\n", | |
" <td>b</td>\n", | |
" <td>b</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>5</th>\n", | |
" <td>a</td>\n", | |
" <td>b</td>\n", | |
" <td>b</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>6</th>\n", | |
" <td>b</td>\n", | |
" <td>b</td>\n", | |
" <td>c</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>7</th>\n", | |
" <td>b</td>\n", | |
" <td>c</td>\n", | |
" <td>c</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>8</th>\n", | |
" <td>b</td>\n", | |
" <td>c</td>\n", | |
" <td>c</td>\n", | |
" </tr>\n", | |
" </tbody>\n", | |
"</table>\n", | |
"</div>" | |
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"text/plain": [ | |
" c1 c2 c3\n", | |
"0 NaN NaN NaN\n", | |
"1 a a a\n", | |
"2 a a a\n", | |
"3 a a b\n", | |
"4 a b b\n", | |
"5 a b b\n", | |
"6 b b c\n", | |
"7 b c c\n", | |
"8 b c c" | |
] | |
}, | |
"execution_count": 4, | |
"metadata": {}, | |
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} | |
], | |
"source": [ | |
"df.shift(1)" | |
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"<div>\n", | |
"<table border=\"1\" class=\"dataframe\">\n", | |
" <thead>\n", | |
" <tr style=\"text-align: right;\">\n", | |
" <th></th>\n", | |
" <th>c1</th>\n", | |
" <th>c2</th>\n", | |
" <th>c3</th>\n", | |
" </tr>\n", | |
" </thead>\n", | |
" <tbody>\n", | |
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" <th>0</th>\n", | |
" <td>True</td>\n", | |
" <td>True</td>\n", | |
" <td>True</td>\n", | |
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" <tr>\n", | |
" <th>1</th>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>2</th>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" <td>True</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>3</th>\n", | |
" <td>False</td>\n", | |
" <td>True</td>\n", | |
" <td>False</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>4</th>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>5</th>\n", | |
" <td>True</td>\n", | |
" <td>False</td>\n", | |
" <td>True</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>6</th>\n", | |
" <td>False</td>\n", | |
" <td>True</td>\n", | |
" <td>False</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>7</th>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" </tr>\n", | |
" <tr>\n", | |
" <th>8</th>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" <td>False</td>\n", | |
" </tr>\n", | |
" </tbody>\n", | |
"</table>\n", | |
"</div>" | |
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"text/plain": [ | |
" c1 c2 c3\n", | |
"0 True True True\n", | |
"1 False False False\n", | |
"2 False False True\n", | |
"3 False True False\n", | |
"4 False False False\n", | |
"5 True False True\n", | |
"6 False True False\n", | |
"7 False False False\n", | |
"8 False False False" | |
] | |
}, | |
"execution_count": 5, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"df != df.shift(1)" | |
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"0 True\n", | |
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"6 True\n", | |
"7 False\n", | |
"8 False\n", | |
"dtype: bool" | |
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"source": [ | |
"(df != df.shift(1)).any(axis=1)" | |
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"0 0\n", | |
"1 0\n", | |
"2 1\n", | |
"3 2\n", | |
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"5 3\n", | |
"6 4\n", | |
"7 4\n", | |
"8 4\n", | |
"dtype: int32" | |
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"(df != df.shift(1)).any(axis=1).cumsum() - 1" | |
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"<div>\n", | |
"<table border=\"1\" class=\"dataframe\">\n", | |
" <thead>\n", | |
" <tr style=\"text-align: right;\">\n", | |
" <th></th>\n", | |
" <th>c1</th>\n", | |
" <th>c2</th>\n", | |
" <th>c3</th>\n", | |
" <th>group</th>\n", | |
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" <tr>\n", | |
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"text/plain": [ | |
" c1 c2 c3 group\n", | |
"0 a a a 0\n", | |
"1 a a a 0\n", | |
"2 a a b 1\n", | |
"3 a b b 2\n", | |
"4 a b b 2\n", | |
"5 b b c 3\n", | |
"6 b c c 4\n", | |
"7 b c c 4\n", | |
"8 b c c 4" | |
] | |
}, | |
"execution_count": 8, | |
"metadata": {}, | |
"output_type": "execute_result" | |
} | |
], | |
"source": [ | |
"df['group'] = (df != df.shift(1)).any(axis=1).cumsum() - 1\n", | |
"df" | |
] | |
}, | |
{ | |
"cell_type": "code", | |
"execution_count": null, | |
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