[Python] How to conserve the integrity of the string from a database response using Python

Hello, i am using py-postgresql as the driver the database, when make a
select to a string with non-ASCII characters, the response replace the
character with "?" what can i make to change this to the correct character?

This is my code:

<code>class decodify:

def __init__(self):
db = pgDriver.connect(user = 'demo', password='demo'
database='hidura_karinapp', host='localhost', port='5432')
d = db.prepare("""SELECT modules_reg.code FROM modules_reg,
domain_reg, sbdomain_reg, sbdomdl_asc where(modules_reg.id =
sbdomdl_asc.module AND modules_reg.mdname = 'police' AND sbdomain_reg.id =
sbdomdl_asc.domain AND sbdomain_reg.domain = domain_reg.id AND
domain_reg.dname = 'bmsuite.com' AND sbdomain_reg.sbname = 'www')""")
s = d()
print(s)

if __name__ == '__main__':
decodify()</code>