1.文件的異常處理：try   except FileNotFoundError

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try:

    open("abc.txt",'r')

except FileNotFoundError:

    print("異常了！")

2.name的異常    try except NameError

try :

    print(aa)

except NameError:

    print("異常了！")

3.可以使用BaseException類處理所以的異常

try:

    open("abc.txt",'r')

    print(aa)

except BaseException:

    print("異常了！")

4.打印異常日志

try:

   # open("abc.txt",'r')

    print(aa)

except BaseException as msg:

    print("異常了！")

    print(msg)

5.python中常見的異常：

（1）try  ...else..

try:

  aa="異常測(cè)試"

 print(aa)

except Exception as msg:
 print(msg)

else:

    print("沒有異常！")

(2)try ...finally..

try:

   # open("abc.txt",'r')

    print(aa)

except BaseException as msg:

    print("異常了！")

    print(msg)

finally:

    print("我都會(huì)執(zhí)行！")

6.拋出異常