Handling 3 operands in an expression without raising an exception

[Νίκος]

Στις 28/9/2013 1:19 μμ, ο/η Chris Angelico έγραψε:
> On Sat, Sep 28, 2013 at 7:33 PM, Νίκος <nikos.gr33k at gmail.com> wrote:
>> It woould be nice if we could write it as:
>>
>>
>> ipval = ( os.environ.get('HTTP_CF_CONNECTING_IP') or
>> os.environ.get('REMOTE_ADDR', "Cannot Resolve") )
>> try:
>>          gi = pygeoip.GeoIP('/usr/local/share/GeoIPCity.dat')
>>          city = gi.time_zone_by_addr( ipval )
>>          host = socket.gethostbyaddr( ipval ) [0]
>> except socket.gaierror as e:
>>          if city failed assign to it "Άγνωστη Πόλη" while if host failed
>> assign it "Άγνωστη Προέλευση"
>>
>> but without an if statement and in 1 single line.
>
> [ROLL] Rosuav rolls his eyes: 1, 1, totalling 2.
>
> Then split your try blocks! You've already been told this.
>
> ChrisA
>
No we didn't have said this. if you are referring to this:

ipval = ( os.environ.get('HTTP_CF_CONNECTING_IP') or 
os.environ.get('REMOTE_ADDR', "Cannot Resolve") )
city = "Άγνωστη Πόλη"
host = "Άγνωστη Προέλευση"
try:
	gi = pygeoip.GeoIP('/usr/local/share/GeoIPCity.dat')
	city = gi.time_zone_by_addr( ipval )
	host = socket.gethostbyaddr( ipval ) [0]
except socket.gaierror as e:
	print( "metrites.py => (%s): " % lastvisit, repr( sys.exc_info() ), 
file=open('/tmp/err.out', 'w') )

this is not the case, because we want the string to beassigned to the 
variables in the except clause not before the try/except block.

And in 1-liner after the except: too, and value must take only which var 
has failed to be assigned one from within try.