Traceback (most recent call last):
  File "Teste Projeto - Python/02.py", line 259, in <module>
    main()
  File "Teste Projeto - Python/02.py", line 256, in main
    resolver(linhas_grade, mapeamento_pontos, clausulas, qntd_pontos, largura_grade)
  File "Teste Projeto - Python/02.py", line 220, in resolver
    grade_resolvida.append(mapeamento_invertido[segura_ponto])
UnboundLocalError: local variable 'segura_ponto' referenced before assignment
Command exited with non-zero status 1
0.07user 0.01system 0:00.10elapsed 90%CPU (0avgtext+0avgdata 30892maxresident)k
8inputs+8outputs (0major+5256minor)pagefaults 0swaps