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DaraFrame 行・列の削除

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##概要
変数に対して**.drop( )**にインデックスまたはカラムを指定する事で削除できる。

##データフレームを作成

import pandas as pd

data = {"furuits": ["apple", "orange", "banana", "strawberry", "kiwifruit"],
              "time": [1, 4, 5, 6, 3],   "year": [2001, 2002, 2001, 2008, 2006]}

df = pd.DataFrame(data)

image.png

#0行目を削除

df1 = df.drop(0)
display(df1)

image.png

#列の削除(第2引数にaxis=1を指定する)

df2 = df.drop("year", axis = 1)
display(df2)

image.png

#まとめて削除(リストで渡す)

df3 = df.drop([1, 2, 3, 4])
display(df3)

image.png

#奇数のインデックスの行を削除

import numpy as np

df4 = df.drop(np.arange(1, 5, 2))
display(df4)

image.png

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