How to add keys to values in List in Python-CodePudding

I have list of float values xy = [412.1587, 14.12, 4112.7, 14.0] and also list of keys keys_list = ['x','y'] Expected output a = [{'x': 412.1587, 'y': 14.12}, {'x': 4112.7, 'y': 14.0}]

Thank you for helping me!

CodePudding user response：

I think you mean dictionary as the output. You can merge two lists into a dictionary using the following process.

keys_list = ['x','y']
values = [412.1587, 14.12, 4112.7, 14.0]
output = dict(zip(keys_list, values))

But I think having the same length lists makes more sense for this kind of solution.

CodePudding user response：

Since the requested output is syntactically wrong, I'm proposing a different solution with somewhat similar output, but replacing 'x' and 'y' with unique keys:

xy = [412.1587, 14.12, 4112.7, 14.0]
keys_list = ['x', 'y']

a = [{f"{keys_list[i % len(keys_list)]}{int(i / 2)}": v} for i, v in enumerate(xy)]

print(a)

This will output

{'x0': 412.1587, 'y0': 14.12, 'x1': 4112.7, 'y1': 14.0}

EDIT After reading your comments, you specified you wanted coordinate pairs in a list so here is an updated function. It will also work if you want to add a third dimension ('z') in the keyset.

pairs = []
for i in range(0, len(xy), len(keys_list)):
    d = {v: xy[i   n] for n, v in enumerate(keys_list)}
    pairs.append(d)

print(pairs)

The output is

[{'x': 412.1587, 'y': 14.12}, {'x': 4112.7, 'y': 14.0}]

CodePudding user response：

lets assume float values xy = test_values and keys_list = test_keys

output = {test_keys[i]: test_values[i] for i in range(len(test_keys))}