advent_of_code_2021

My attempts to work through the 2021 Advent of Code problems.
git clone https://git.eamoncaddigan.net/advent_of_code_2021.git
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day13_part2.py (1693B)

      1 #!/usr/bin/env python
      2 """Advent of Code 2021, day 13 (part 1): Transparent Oragami
      3 Fold a grid of dots repeatedly to reveal a pattern, and read the pattern"""
      4 
      5 # Applying the folds, printing the result to the terminal, and reading it in?
      6 # Fairly easy. It would be a taller order to hack together an OCR-like process,
      7 # but I'm reminded that "good programmers are lazy" and calling this done.
      8 
      9 from typing import Tuple, List
     10 from functools import reduce
     11 import numpy as np
     12 from day13_part1 import (EXAMPLE_INPUT,
     13                          parse_input,
     14                          fold_dotgrid)
     15 from utils import get_puzzle_input
     16 
     17 def apply_all_folds(dotgrid: np.ndarray,
     18                     instructions: List[Tuple[int, int]]) -> np.ndarray:
     19     """Apply all the folds in the instructions and return the final dotgrid"""
     20     return reduce(fold_dotgrid, instructions, dotgrid)
     21 
     22 def prettify_dotgrid(dotgrid: np.ndarray) -> str:
     23     """Return a string representation of the solution (spanning multiple
     24     lines)"""
     25     dotgrid_str = np.empty_like(dotgrid, dtype=str)
     26     dotgrid_str[:, :] = " "
     27     dotgrid_str[dotgrid] = "#"
     28     return '\n'.join([''.join(l) for l in dotgrid_str]) + '\n'
     29 
     30 def solve_puzzle(input_string: str) -> str:
     31     """Returns a printable version of the puzzle solution"""
     32     return prettify_dotgrid(
     33         apply_all_folds(*parse_input(input_string))
     34     )
     35 
     36 def main() -> None:
     37     """Run when the file is called as a script"""
     38     assert solve_puzzle(EXAMPLE_INPUT) == \
     39         "#####\n#   #\n#   #\n#   #\n#####\n     \n     \n"
     40     print("Thermal imaging code:",
     41           solve_puzzle(get_puzzle_input(13)),
     42           sep='\n')
     43 
     44 if __name__ == "__main__":
     45     main()