import csv

class Mon(csv.Dialect):
    delimiter = ','
    quotechar = '"'
    doublequote = True
    quoting = 0
    lineterminator = '\n'

f = open('sans_headers.csv','r')
reader = csv.DictReader(f, fieldnames=('code', 'nom', 'texte'), dialect=Mon)
print reader.dialect
mon_rows = list(reader)

f = open('sans_headers.csv','r')
reader = csv.DictReader(f, fieldnames=('code', 'nom', 'texte'),
                        delimiter=',', quotechar='"', quoting=0,
                        lineterminator='\n')
print reader.dialect
dflt_rows = list(reader)

print 1

for (mon_row, dflt_row) in zip(mon_rows, dflt_rows):
    if mon_row != dflt_row:
        print (mon_row, dflt_row)

f = open('sans_headers.csv','r')
reader = csv.DictReader(f, fieldnames=('code', 'nom', 'texte'))
print reader.dialect
excel_rows = list(reader)

print 2

for (mon_row, excel_row) in zip(mon_rows, excel_rows):
    if mon_row != excel_row:
        print (mon_row, excel_row)