New answers tagged dataframe
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Please follow the below steps.
Create a new column called user_id in the Users dataframe and fill values 1,2,3....
Iterate the Ratings dataframe row by row and search for the id_user in the id_user column in the Users dataframe, if we find a match take the value from the newly introduced column user_id and replace the id_user column in the Ratings dataframe....
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