Django: Query using contains each value in a list

import operator
from django.db.models import Q

User.objects.filter(reduce(operator.and_, (Q(first_name__contains=x) for x in ['x', 'y', 'z'])))

for python 3

from functools import reduce

.

import operator
from django.db.models import Q

q = ['x', 'y', 'z']
query = reduce(operator.and_, (Q(first_name__contains = item) for item in q))
result = User.objects.filter(query)