Python

Voici ma solution du jour :

#!/bin/python3
def intlen(nb):
 l = 0
 while nb >= 1:
 nb = nb / 10
 l +=1
 return l
def ispart(puzzle,line,col,n):
 try :
 if puzzle[line][col-1].isdigit():
 return 0
 except IndexError:
 pass
 try :
 for i in range(1,5):
 if puzzle[line][col+i].isdigit():
 n = n*10 + int(puzzle[line][col+i])
 else:
 break
 except IndexError:
 pass
 for j in [1,-1]:
 for i in range(-1,intlen(n)+1):
 try :
 if puzzle[line+j][col+i].isdigit() == False and puzzle[line+j][col+i] != ".":
 return n
 except IndexError:
 pass
 for i in [-1,intlen(n)]:
 try :
 if puzzle[line][col+i].isdigit() == False and puzzle[line][col+i] != ".":
 return n
 except IndexError:
 pass
 return 0
def isgear(puzzle,line,col,j):
 try:
 if puzzle[line][col].isdigit() == False:
 return 0
 except IndexError:
 return 0
 if j != -1:
 try:
 if puzzle[line][col-1].isdigit():
 return 0
 except IndexError:
 pass
 start = 0
 for i in range(-1,-5,-1):
 try:
 if puzzle[line][col+i].isdigit():
 start -= 1
 else:
 break
 except IndexError:
 break
 p = ispart(puzzle, line, col+start, int(puzzle[line][col+start]))
 return p
def solve1(puzzle,testing=False):
 s=0
 for line in range(len(puzzle)):
 for col in range(len(puzzle[line])):
 if puzzle[line][col] == ".":
 continue
 elif puzzle[line][col].isdigit():
 p = ispart(puzzle,line,col,int(puzzle[line][col]))
 s += p
 if testing and p!=0:
 print("The part ", p," at ", line, ";", col, " is ok.")
 if testing:
 print(s)
 return s
def solve2(puzzle,testing=False):
 s = 0
 for line in range(len(puzzle)):
 for col in range(len(puzzle[line])):
 if puzzle[line][col] == "*":
 ng = 0
 g = [0,0,0]
 for i in [1,0,-1]:
 for j in [1,0,-1]:
 g[ng] = isgear(puzzle,line+i,col+j,j)
 if g[ng] != 0:
 ng += 1
 if ng == 3:
 break
 if ng == 3:
 break
 if ng == 2:
 if testing:
 print("Gear at ",line,";",col," with parts ",g[0],";",g[1])
 s += g[0] * g[1]
 elif testing:
 print("Gear at ",line,";",col," but with ",ng," parts.")
 if testing:
 print(s)
 return s
test1 ="""
467..114..
...*......
..35..633.
......#...
617*......
.....+.58.
..592.....
......755.
...$.*....
.664.598.."""
result1 = 4361
test2 = test1
result2 = 467835
def solve(short=False):
 print("----Part 1----")
 if short == False:
 if solve1(test1.split("\n"),testing=True) != result1:
 print("Not working.")
 return False
 else :
 print("Maybe working?")
 with open("input.txt",'r') as file:
 lines = file.read().split("\n")
 s1 = solve1(lines)
 print(s1)
 print("----Part 2----")
 if short == False:
 if solve2(test2.split("\n"),testing=True) != result2:
 print("Not working.")
 return False
 else :
 print("Maybe working?")
 with open("input.txt",'r') as file:
 lines = file.read().split("\n")
 s2 = solve2(lines)
 print(s2)
 return s1, s2
if __name__ == "__main__":
 from sys import argv
 try:
 if argv[1] == "--summary" or argv[1] == "-s":
 solve(short=True)
 except IndexError:
 solve()

J'ai passé beaucoup de temps à essayer de comprendre pourquoi diable les test fonctionnaient mais pas l'input ! La réponse était dans ma fonction pour récupérer la taille d'un entier :

def intlen(nb):
 l = 0
 while nb > 0:
 nb = nb / 10
 l +=1
 return l

Avec while nb > 0 au lieu de while nb >= 1. Mais les données de test fonctionnaient, c'était incompréhensible.

Et oui, je suis un grand adepte du try ... except quand je code vite et crade.

L'informatique n'est pas une science exacte, on n'est jamais à l'abri d'un succès