problem3_load.py

"""
Each grid is a 2d-matrix.
Each cell is either '-' or '#'.
"""
grids = []
f = open('problem3_input.txt','r')
while(True):
    grid = []
    line = f.readline()
    if (len(line) < 1):
        break
    width,height = (int(i) for i in line.split())
    for row in range(height):
        line = f.readline().strip()
        grid.append(list(line))
    grids.append(grid)