How to add a suffix (or prefix) to each column name?

Question

I want to add _x suffix to each column name like so:

featuresA = myPandasDataFrame.columns.values + \'_x\'

How do I do this? A

Answer 1

I Know 4 ways to add a suffix (or prefix) to your column's names:

1- df.columns = [str(col) + '_some_suffix' for col in df.columns]

or

2- df.rename(columns= lambda col: col+'_some_suffix')

or

3- df.columns += '_some_suffix' much easiar.

or, the nicest:

3- df.add_suffix('_some_suffix')