python try/except variable scope?

>>> try:
...     testr = "still be effective in the except?"
...     raise "exception"
... except:
...     print testr
...
still be effective in the except?

所以在 try 中定义的变量在 except 中仍有效！

然后看看下面这种情况：

>>> try:
...     for item in ['A', 'B', 'C']:
...         print item
...     raise "exception"
... except:
...     print item
...
A
B
C
C

注意这里的 item，在 excpet 中仍然有效，只不过只是最后一个值。

再改成 finally：

>>> try:
...     testr = "still be effective in the except?"
...     raise "exception"
... finally:
...     print testr
...
still be effective in the finally
Traceback (most recent call last):
  File "", line 3, in ?
exception