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The db has a datetime index and I suspect that might be an issue. DataFrame' object has no attribute 'apply'” when trying to 大規模（？）なpandas DataFrameからcolumn指定でSeriesを抜き出して、.uniqueや.mapを使ったときの DataFrame Object has no attribute uniqueのようなエラーの意味を知りたいです。 レコード数を減らしたら問題なく動くので、メモリエラーだと思うのですが、その認識で正しいのでしょうか？ 3. data[['VehicleId']]选出来的是一个DataFrame. dataframe How to Solve Python AttributeError: 'DataFrame' object has no … dataframe pandas.DataFrame.drop_duplicates — pandas 1.4.2 documentation dataframe 10 'NoneType' object has no attribute 'unique' BUT I'm not using the 'unique' attribute I'm build models in Django 1.8, and I'm using abstract inheritance (which I'm assuming is contributing to the problem). object has no attribute DataFrame 3) added a calculated column to the new DF by multiplying another column. Pandas dataframe.nunique () function return Series with number of distinct observations over requested axis. So, now what you can do is something like this: X = df.iloc [:, [2, 3]] # Will give you columns 2 and 3 i.e 'petal_length' and 'petal_width' y … Some other variable is named ‘pd’ or ‘pandas’ 3. The file name is pd.py or pandas.py. object has no attribute ‘append Milestone. 报错module 'numpy' has no attribute 'linespace'？？？ 我要回答 关注问题. How to use unique on a dataframe column. However, when an empty index has a dtype different from object, we may want to preserve it (as it may have been created explicitly by the user).