python 如果最终 returns 值未引发异常

Question

谁能解释为什么下面的例子没有引发 Exception？

def foo():
    try:
        0/0
    except Exception:
        print('in except')
        raise
    finally:
        print('in finally')
        return 'bar'

my_var = foo()
print(my_var)

这只是 returns:

in except
in finally
bar

因为没有 return 'bar' 语句的相同代码抛出异常：

in except
in finally
Traceback (most recent call last):
  File "test.py", line 10, in <module>
    my_var = foo()
  File "test.py", line 3, in foo
    0/0
ZeroDivisionError: division by zero

Answer 1

有关详细信息，请参阅，但简而言之

应该始终执行 finally 块，因此 Python 必须忽略 raise 语句，因为这会违反语义

python 如果最终 returns 值未引发异常

python exception not raised if finally returns value

python

exception-handling

exception

try-except