摘要: 调试 断言凡是用print()来辅助查看的地方,都可以用断言(assert)来替代def foo(s): n = int(s) assert n != 0, 'n is zero!' return 10 / n def main(): foo('0') assert的意思是,表达式n != 0应该是 阅读全文
posted @ 2018-02-26 09:32 夜游星 阅读(145) 评论(0) 推荐(0)
摘要: try...except...finally...的错误处理机制 例try: print('try...') r = 10 / 0 print('result:', r)except ZeroDivisionError as e: print('except:', e)finally: print( 阅读全文
posted @ 2018-02-26 09:18 夜游星 阅读(239) 评论(0) 推荐(0)