import collections

student=collections.namedtuple('student', 'name  lastname age grade city')
s= []
s.append(student("ali","alizadeh", 23, 14.25,"Tehran"))
s.append(student("reza","rezazadeh", 25, 19.25,"Tabriz"))
s.append(student("naser","nasery", 27, 15.25,"shiraz"))
for i in range(3):
    print(s[i][0],s[i][1])