Nested Dictionary Compression

Build profound data representations in tight spaces.

You have raw tuples corresponding to ID and coordinates:
```
data = [(1, 0, 0), (2, 5, -2)]
```
.
Using a dictionary comprehension, assign the ID as the key.
Assign a dictionary populated by
```
{"x": <val1>, "y": <val2>}
```
as the value for the comprehension target!
Print the final assembled tree mapping.

main.py

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