def _load_save(self):
"""Loads the saved game file."""
try:
load = open(save_file, 'r')
cipher_text = load.read()
load_string = sc.decrypt(get_password(), cipher_text)
load_values = load_string.splitlines()
if len(load_values) != self.grid_size*self.grid_size + 1:
raise ValueError
self.score = int(load_values[0])
for i in range(self.grid_size):
for j in range(self.grid_size):
self.grid[i][j] = int(load_values[i*self.grid_size + j + 1])
if not is_power(self.grid[i][j], 2) and self.grid[i][j] != 0:
raise ValueError
except sc.DecryptionException:
print("Save file could not be read. Starting new game")
self.new_game()
except ValueError:
print("Save file format corrupted. Starting new game")
self.new_game()
os.remove(save_file)
self.win.queue_draw()
