python基础－异常处理

多分枝报错

# 多分支报错

try:
    print("hello")
    # print(x)
    print("======>")

except KeyError as k:
    raise KeyError()
    # print(k)

except NameError as n:
    print(n)
else:
    print("try code 没有异常，就执行我")

finally:
    print("无论有无异常都执行，一般执行清理操作")

　　

万能异常

# 万能异常

try:
    print(x)
except Exception as e:
    print(e)
else:
    print("try code 没有异常，就执行我")
finally:
    print("无论有无异常都执行，一般执行清理操作")

　　

try-except-finally

try-else-finally