loss of precision with non default locale

import mariadb

import locale

conn = {'host': '192.168.1.2', 'user': 'test', 'password': 'test'}

db = mariadb.connect(**conn)

qr = db.cursor()

latitude = -24.971077771106

longitude = -53.95170397719726

qr.execute('set @lat=?, @lng=?', (latitude, longitude))

qr.execute('select @lat, @lng')

lat, lng = qr.fetchone()

print(lat, lng)

# Here, returns what's expected: -24.971077771106 -53.95170397719726

locale.setlocale(locale.LC_ALL, 'pt_BR.utf8')

qr.execute('select @lat, @lng')

lat2, lng2 = qr.fetchone()

print(lat2, lng2)

# But here, returns: -24.0 -53.0