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@darkqueenreal

pandasの1重と２重括弧の違い

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pandasの２重括弧について

DataFrameから特定のcolumnをdf['column']取り出すと、typeがSeriesになってしまい、扱いにくい場合がある。実は２重カッコを使うと、DataFrameとして取れるので、こっちの方が便利。

# df1 is Series
df1=df['column0']   # Series

# df2 is DataFrame
df2=df[['column0']] # DataFrame
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