Get the feature names output by a ColumnTransformer

Need to get the feature names output by a ColumnTransformer?
Use get_feature_names(), which now works with "passthrough" columns (new in version 0.23)!

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[Dara-ljrk]

If I may suggest, it would be interesting to see the difference between pipeline inside a column transformer vs. a column transformer inside a pipeline. I personally always put CT inside a pipeline, so keen to know a use case for the other one.

[haitingyou]

Hello, I want get the whole set of columns name including numerical, but with your method, it returned "Transformer num (type Pipeline) does not provide get_feature_names." Do you have any other suggestions?

[eatbreathedatascience]

oh, I didn't know that you can get the features names from the output. What's the different then if I were to do a df.columns of the output dataframe ?

I still cannot get the idea of doing OHE and then do PCA on the output in a pipeline. Have you done a video on that already ? If not, could give some tips how to transform the output from the previous steps, like in the scenario I've described ? Thanks very much in advance.

[zeinat]

this just saved me from a big headache

[python]

hey i want one question and i want solution from you i have one arry like string ["4599"], ["6625"], ["7777"], ["12345"], [7070] but i want print only this out put like this ["4599"], ["6625"], ["7777"] means i want print that string which string have same string last two or 1st and next if are same and or whole are same like in this arry ["7777"] how will sove this question