我知道我可以做到:
try: # do something that may fail except: # do this if ANYTHING goes wrong
我也可以这样做:
try: # do something that may fail except IDontLikeYouException: # say please except YouAreTooShortException: # stand on a ladder
但是,如果我想在两个不同的异常中做同样的事情,那么我现在想到的最好的方法就是:
try: # do something that may fail except IDontLikeYouException: # say please except YouAreBeingMeanException: # say please
有什么办法可以做这样的事情(因为在两个异常中都采取的措施是say please):
say please
try: # do something that may fail except IDontLikeYouException, YouAreBeingMeanException: # say please
现在,这确实不起作用,因为它与以下语法匹配:
try: # do something that may fail except Exception, e: # say please
因此,我捕捉两个截然不同的异常的努力并未完全实现。
有没有办法做到这一点?
例如,except子句可以将多个异常命名为带括号的元组。
except
except (IDontLikeYouException, YouAreBeingMeanException) as e: pass
或者,仅对于Python 2:
except (IDontLikeYouException, YouAreBeingMeanException), e: pass
用逗号将变量与变量分开仍然可以在Python 2.6和2.7中使用,但是现在已弃用,并且在Python 3中不起作用。现在你应该使用as。