CODE EXAMPLE FOR PYTHON

How to put a header title per dataframe after concatenate using pandas in python

dfs = [d1, d2, d3]

df_combined = pd.concat(
    [df.rename(columns=lambda x: x.zfill(4)) for df in dfs],
    keys=['HEADER TITLE{}'.format(i) for i in range(1, len(dfs) + 1)],
    axis=1
)

df_combined