Why can not catch the inner exception

[Mark T]

"人言落日是天涯，望极天涯不见家" <kelvin.you at gmail.com> wrote in message 
news:1181215054.826742.75930 at n15g2000prd.googlegroups.com...
> Please see the follow code,  I can not catch the exception " IOError"
> raised from shutil.copyfile() , why?
>                try:
>                    if (DEST_TYPE & TYPE_FTP):
>                        fn = oname
>                        ftpc.UploadFile(f, fn)
>                    else:
>                        fn = os.path.join(dst, oname)
>                        shutil.copyfile(f, fn)
>
>                    .... other code....
>
>                except [IOError, FtpcException],why:
>                    num = 0
>                    print >>sys.stderr, "can not copy '%s' to '%s':
> %s"%(f, fn, why)
>                    ERR_NUM += 1
>
> I must do like this:
>                try:
>                    if (DEST_TYPE & TYPE_FTP):
>                        fn = oname
>                        ftpc.UploadFile(f, fn)
>                    else:
>                        fn = os.path.join(dst, oname)
>                        try:
>                             shutil.copyfile(f, fn)
>                        except IOError:
>                                   ....
>
>                    .... other code....
>
>                except [IOError, FtpcException],why:
>                    num = 0
>                    print >>sys.stderr, "can not copy '%s' to '%s':
> %s"%(f, fn, why)
>                    ERR_NUM += 1
>
> Thanks!
>

你好,

Use a tuple (IOError,FtpcException) instead of a list in the except 
statement and it works.

--马克