# 0108.py

def f (*a, u=3):
  s=u
  for x in a: s+=x
  return s

print (f(2,3,4,u=5))
# 14

print (f(1,2,3,4))
# 13

def g (*a, t,u=7):
  return list(a)+[t,u]

print (g(1,2,3,4,t=6))
# [1, 2, 3, 4, 6, 7]

print (g(1,2,3,4,u=9,t=6))
# [1, 2, 3, 4, 6, 9]