Function argument unpacking
You can unpack a list or a dictionary as function arguments using * and **.
For example:
def draw_point(x, y):
# do some magic
point_foo = (3, 4)
point_bar = {'y': 3, 'x': 2}
draw_point(*point_foo)
draw_point(**point_bar)
Very useful shortcut since lists, tuples and dicts are widely used as containers.
