Python pandas.Series.str.casefold用法及代碼示例

用法: Series.str.casefold()

將 Series/Index 中的字符串轉換為大小寫。

等效於 str.casefold() 。

對象的係列或索引

例子：

>>> s = pd.Series(['lower', 'CAPITALS', 'this is a sentence', 'SwApCaSe'])
>>> s
0                 lower
1              CAPITALS
2    this is a sentence
3              SwApCaSe
dtype:object

>>> s.str.lower()
0                 lower
1              capitals
2    this is a sentence
3              swapcase
dtype:object

>>> s.str.upper()
0                 LOWER
1              CAPITALS
2    THIS IS A SENTENCE
3              SWAPCASE
dtype:object

>>> s.str.title()
0                 Lower
1              Capitals
2    This Is A Sentence
3              Swapcase
dtype:object

>>> s.str.capitalize()
0                 Lower
1              Capitals
2    This is a sentence
3              Swapcase
dtype:object

>>> s.str.swapcase()
0                 LOWER
1              capitals
2    THIS IS A SENTENCE
3              sWaPcAsE
dtype:object

相關用法

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