rocarvaj

# Merging a pandas groupby result back into DataFrame 
# Ref: http://stackoverflow.com/a/29642002/162264

df['maxval'] = df.groupby(by=['idn']).transform('max')

#Print full dataframe
def print_full(x):
    pd.set_option('display.max_rows', len(x))
    print(x)
    pd.reset_option('display.max_rows')