在 Pandas中，drop_duplicates（）提供了删除重复值的功能，这个方法主要帮助我们删除后出现的重复值。例如，某列数据如下：Open： Open1 12
A. df[‘open’].drop_first（）
B. df[‘open].drop_duplicates（keep=’first’）
C. df[‘open’].drop_duplicates（keep=’last’）
D. df[‘open’].drop_last（）
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扩展库pandas的DataFrame数据中的字符串列支持str接口，该接口提供了center、contains、count、endswith、find、extract、lower、split等大量属性和方法。
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在 Pandas中，drop_duplicates（）提供了删除重复值的功能，这个方法主要帮助我们删除后出现的重复值。例如，某列数据如下：Open： Open1 12
A.df[‘open’].drop_first（） B.df[‘open].drop_duplicates（keep=’first’） C.df[‘open’].drop_duplicates（keep=’last’） D.df[‘open’].drop_last（）
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