"Try:" which only encompasses head of compound statement

[Bjoern Schliessmann]

 Jameson.Quinn at gmail.com wrote:
> I have:
> 
> try:
>     for line in open(myFileName):
>         count += 1
> except IOError:
>     print "Can't open myfile"
> 
> (I know, this is bad, I never close the file, but its just for
> illustration). But then I change it to:
> 
> try:
>     for line in open(myFileName):
>         count += openAndProcessSubfile(line)
> except IOError:
>     print "Can't open myfile"
> 
> ... now the 'except' incorrectly catches errors from
> openAndProcessSubfile.

The typical way to counter this would be by catching the IOError
earlier so it won't propagate to the outmost "try":

try:
    for line in open(myFileName):
        try: 
            count += openAndProcessSubfile(line)
        except IOError:
            print "Can't open subfile"
except IOError:
    print "Can't open myfile"

Regards,


Björn

-- 
BOFH excuse #121:

halon system went off and killed the operators.