Assigning Variables to Tuples in a List

Question

I am currently using a function to return a list of tuples (coordinates). I need to assign these coordinates variables so I can use them in a for loop.

My function is:

new_connect = astar.get_path(n1x, n1y, n2x, n2y)

with print(new_connect) I get the output:

[(76, 51), (75, 51), (74, 51), (73, 51), (72, 51), (71, 51), (70, 51), (69, 51), ...]

I need to assign these tuples variables i.e. (x, y)
So they can be used in the following for loop:

for x in range(new_connect):
    for y in range(new_connect):
        self.tiles[x][y].blocked = False
        self.tiles[x][y].block_sight = False

Which (should) plot the coordinates and change their tile values.

Any help is greatly appreciated. I've been stuck working on this and feel like I'm missing something super simple.

You could always just index into the tuple, right? – AMC Dec 17 '19 at 04:27 — AMC, Dec 17 '19 at 04:27

score 1 · Accepted Answer · answered Dec 17 '19 at 04:11

1

You can use unpacking

new_connect = [(76, 51), (75, 51), (74, 51), (73, 51), (72, 51), (71, 51), (70, 51), (69, 51)]
for x, y in new_connect:
    print(x, y)

answered Dec 17 '19 at 04:11

This worked! I changed my for loop to `for x, y in new_connect:` and kept the rest. Thank you very much. – TrialOrc Dec 17 '19 at 04:16

score 1 · Answer 2 · answered Dec 17 '19 at 04:12

1

So, it isn't clear how range(new_connect) is actually working. It shouldn't. You should receive a TypeError, because a list object is not the correct argument to range.

That said, you should be able to create a for loop for a list of tuples by performing the tuple unpacking in the for statement itself.

for x, y in astar.get_path(...):
    ...

answered Dec 17 '19 at 04:12

asthasr

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`range(new_connect)` doesn't work. I just left it there as a placeholder. I'll add that, will remove some lines of code. – TrialOrc Dec 17 '19 at 04:22

Assigning Variables to Tuples in a List

2 Answers2