检查以下有关python中异常处理的代码
class myException(Exception):
def __str__(self):
return 'this is my exception'
class myException2(Exception):
def __str__(self):
return 'this is my exception 2'
def myfunc():
try:
raise myException2
print('after exception')
except myException:
a = 'exception occur'
print(a)
else:
a = 'exception doesn\'t occur'
print(a)
finally:
a = 'no matter exception occurs or not'
print(a)
return a
然后运行myfunc()将输出而不会弹出任何异常
no matter exception occurs or not
但是如果注释中的finally子句中的'return a'代码,输出将捕获未处理的myException2,
no matter exception occurs or not
---------------------------------------------------------------------------
myException2 Traceback (most recent call last)
<ipython-input-140-29dfc9311b33> in <module>()
----> 1 …