関連ワード:  remove occurrences in list python    remove all occurrences in list python    remove first occurrence in list python    remove all instances in list python    remove instances from list python    remove all occurrences of element in list python    remove all occurrences of value in list python    remove all occurrences of string in list python    remove all occurrences of a character in a list python    remove all occurrences of a number in a list python