29 дек. 2013 г. · I'd like to tack two new columns onto my frame, one for each part of the 2-tuple corresponding to the label for each row.

18 янв. 2023 г. · I have a list of strings stored in a pandas dataframe df, with column name of text (ie df['text']). I have a function f(text: str) -> (int, int, int).

17 янв. 2022 г. · I have a Pandas dataframe which contains a single column val, as well as a function func which takes in a value and spits out a list of some fixed length.

18 янв. 2023 г. · I need to assign values from columns D and E to columns A and B if the value of column C is true. I want to achieve this in one line using the .

12 авг. 2021 г. · You could make a second DataFrame of your apply and concat the two column wise. This will create the new columns to your original dataframe

17 окт. 2016 г. · I want to replace negative values with nan for only certain columns. The simplest way could be: for col in ['a', 'b', 'c']: df.loc[df[col ] < 0, col] =

26 апр. 2013 г. · I have a function extract_text_features on a single text column, returning multiple output columns. Specifically, the function returns 6 values.

9 мар. 2022 г. · You can use the parameter "result_type" of the function apply. Setting this parameter to "expand" will turn the resulting list into columns.

6 апр. 2019 г. · you can create Series by Index.get_indexer for positions by columns names and DataFrame.iloc for select by positions:

23 сент. 2021 г. · If you want to create a new dataframe, you can rename the columns using a simple dictionary: cols = ['colour', 'animal'] new_df ...