python3 syntax: * before variable

Question

g = dominoes.Game.new()

for _ in range(fixed_moves):
    g.make_move(*g.valid_moves[0])

In the last line, what does the * before object g mean?

Answer 1

Asterisks (*) in arguments are used for unpacking.

For example:

def f(n, m):
  pass

l = [2, 3]
f(*l)

This will unpack l and will make the parameters n and m 2 and 3, respectively.