Python 小知识点（10）--异常结构记录

try:
    print("try中")
except KeyError as e:
    # 异常时，执行该块
    print("异常中")
else:
    # 主代码块(try)执行完，执行该块
    print("try中正常执行后会来到else中")
finally:
    print("finally中")
    # 无论异常与否，最终执行该块
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(1)except KeyError as e: 键错误异常时，执行该块
   except IndexError as e:索引错误异常时，执行该块
   except Exception as e: 万能异常
(2)else:  try中正常执行后会来到else中
(3)finally:  无论异常与否，最终执行该块

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