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Python Python Collections (2016, retired 2019) Dungeon Game Hit points

Ronald Tse
Ronald Tse
5,798 Points
Posted by Ronald Tse
Ronald Tse
5,798 Points

How can we change tuples??

both player and direction are tuples, but then I'm required to change the player tuple... HOW?

movement.py 
# EXAMPLES:
# move((1, 1, 10), (-1, 0)) => (0, 1, 10)
# move((0, 1, 10), (-1, 0)) => (0, 1, 5)
# move((0, 9, 5), (0, 1)) => (0, 9, 0)

def move(player, direction):
    x, y, hp = player
    if direction = (-1, 0):
        if player[0] = 0:
            player[2] - 5
        else:
            player[0] - 1
    if direction = (1, 0):
        if player[0] = 9:
            player[2] - 5
        else:
            player[0] + 1
    if direction = (0, -1):
        if player[1] = 0:
            player[2] - 5
        else:
            player[1] - 1
    if direction = (0, 1):
        if player[1] = 9:
            player[2] - 5
        else:
            player[1] + 1
    return x, y, hp

1 Answer

William Li
PLUS
William Li
Courses Plus Student 26,868 Points
William Li
William Li
Courses Plus Student 26,868 Points

yes, player parameter is tuple, (tuple is immutable, you got that right). But you aren't supposed to modify the player tuple.

x, y, hp = player

Because the setup in this line, values in the player tuple's were decomposed into three variables, x,y,hp, if change needs to be made, make the change to these 3 variables.

Then at the very last line of the code return x, y, hp, a new tuple is returned.

PS: I'm not sure if this was covered during the lecture, but return x, y, hp is equivalent to return (x, y, hp).