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@@ -1,3 +1,77 @@
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実現したいことというのは、下記URLのようなことでしょうか。
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[pandasでカテゴリ変数をダミー変数に変換（get_dummies）](https://note.nkmk.me/python-pandas-get-dummies/)
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```python3
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import io
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import pandas as pd
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data = """name type
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0 A east
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1 B west
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2 C east
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3 A middle
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4 A west
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5 C east"""
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df = pd.read_table(io.StringIO(data), delimiter="\s+")
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print(df)
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# name type
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# 0 A east
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# 1 B west
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# 2 C east
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# 3 A middle
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# 4 A west
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# 5 C east
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new_df = pd.concat([df,pd.get_dummies(df['type'])],axis=1)
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print(new_df)
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# name type east middle west
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# 0 A east 1 0 0
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# 1 B west 0 0 1
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# 2 C east 1 0 0
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# 3 A middle 0 1 0
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# 4 A west 0 0 1
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# 5 C east 1 0 0
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sum_df = pd.DataFrame(new_df.groupby(["name"]).sum().reset_index())
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print(sum_df)
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# name east middle west
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# 0 A 1 1 1
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# 1 B 0 0 1
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# 2 C 2 0 0
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```
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