Add row if len(row) == 2 (python, csv)

Question

I would like to generate a new row when there are only 2 rows

with open(pathCSV) as f:
     reader = csv.reader(f)
     for row in reader:                     
         if len(row) == 2:
            #add row

if i print my row it return me that:

['Contrôle', '']
['CLÉS', '']
['Entrée', '4 clés entrées']
['Entrée 2', '1 clé entrée porte bâtiment']

and i want to have:

['Contrôle', '','']
['CLÉS', '','']
['Entrée', '4 clés entrées','']
['Entrée 2', '1 clé entrée porte bâtiment','']

Answer 1

Just appending a new value should work.

with open(pathCSV) as f:
     reader = csv.reader(f)
     for row in reader:                     
         if len(row) == 2:
             row.append('')
             print(row)

returns

['Contrôle', '','']
['CLÉS', '','']
['Entrée', '4 clés entrées','']
['Entrée 2', '1 clé entrée porte bâtiment','']