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PythonAdvent Calendar 2023

Day 13

Pythonで「リストから要素を削除する」の動作を確認してみた

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概要

Pythonで「リストから要素を削除する」の動作を確認してみました。以下のページを参考にしました。

実装

以下のファイルを作成しました。

sample.py
fruitslist = ["Orange", "Lemon", "Peach", "Grapes", "Apple"]
# "Peach" を削除
del fruitslist[2]
print(fruitslist)
# "Lemon" から "Grapes" まで削除
del fruitslist[1:3]
print(fruitslist)

numlist = ["One", "Two", "Three", "Four", "Five"]
# "Three" を削除
numlist[2:3] = []
print(numlist)
# "Two" から "Four" まで削除
numlist[1:3] = []
print(numlist)

fruitslist = ["Orange", "Lemon", "Peach", "Grapes", "Apple"]
# 最後の要素を取得して削除
print("Delete: " + fruitslist.pop())
print(fruitslist)
# 最後の要素を取得して削除
print("Delete: " + fruitslist.pop())
print(fruitslist)
# "Lemon" を取得して削除
print("Delete: " + fruitslist.pop(1))
print(fruitslist)

animallist = ["Dog", "Cat", "Monkey", "Bear", "Rabbit"]
# "Monkey"の要素を削除
animallist.remove("Monkey")
print(animallist)
# "Rabbit"の要素を削除
animallist.remove("Rabbit")
print(animallist)

colorlist = ["Blue", "Red", "Green"]
colorlist.clear()
print(colorlist)

以下のコマンドを実行しました。

$ python3 sample.py 
['Orange', 'Lemon', 'Grapes', 'Apple']
['Orange', 'Apple']
['One', 'Two', 'Four', 'Five']
['One', 'Five']
Delete: Apple
['Orange', 'Lemon', 'Peach', 'Grapes']
Delete: Grapes
['Orange', 'Lemon', 'Peach']
Delete: Lemon
['Orange', 'Peach']
['Dog', 'Cat', 'Bear', 'Rabbit']
['Dog', 'Cat', 'Bear']
[]

まとめ

何かの役に立てばと。

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