Remove characters from string in column name just for a few columns

Question

Hi I have a dataframe with 75 characters in the columns name that I don't need to make a chart with matplot so I was trying to use this line:

dfr = dfr.iloc[:,1:11].rename(columns=lambda x: x[75:], inplace=True)

But when I print it gives me none, I just need to remove this from the first 10 columns the rest are ok, but I'm not sure what is wrong, help please

Answer 1

You are trying to slice the dataframe and rename the sliced dataset columns and re-assigning to the original dataset which has a different shape.

Try renaming using dict

new_names = dfr.iloc[:,0:10].rename(columns=lambda x: x[75:]).columns #first 10 columns
dfr.rename(columns=dict(zip(dfr.columns,new_names)),inplace=True)