irkerd: Convert to Python 3's "except x as y" syntax

Support for this was added in Python 2.6 and 3.0.  We can't have
Python 3 compatibility without removing the old "except x, y" syntax,
and I think 3.x support is more imporant than 2.5 support.  In any
case, the existing irkerd has been using the new syntax since 3cc8751
(Truncate messages that are longer than 512 bytes and catch any
exceptions irclib throws about rejected messages, 2013-01-21), so this
commit is not a *new* break with 2.5 support.

diff --git a/irkerd b/irkerd
index a84d26571ea51f2f4555ffe253363445cf0ccfb0..71a8c10baec015ee9a212890353c81c204c41694 100755 (executable)
--- a/irkerd
+++ b/irkerd
@@ -17,7 +17,6 @@ resource page at <http://www.catb.org/~esr/irker/>.
 
 Requires Python 2.7, or:
 * 2.6 with the argparse package installed.
-* 2.5 with the argparse and simplejson packages installed.
 """
 
 from __future__ import with_statement
@@ -580,7 +579,7 @@ class Connection:
                     LOG.error(
                         "We're expired but still running! This is a bug.")
                     break
-        except Exception, e:
+        except Exception as e:
             LOG.error("exception %s in thread for %s" % (e, self.target))
             # Maybe this should have its own status?
             self.status = "expired"
@@ -816,7 +815,7 @@ class Irker:
                         url)
                 target = Target(url)
                 target.validate()
-            except InvalidRequest, e:
+            except InvalidRequest as e:
                 LOG.error(str(e))
             else:
                 targets.append(target)
@@ -853,7 +852,7 @@ class Irker:
                             self.servers.keys(),
                             key=lambda name: self.servers[name].last_xmit())
                         del self.servers[oldest]
-        except InvalidRequest, e:
+        except InvalidRequest as e:
             LOG.error(str(e))
         except ValueError:
             self.logerr("can't recognize JSON on input: %r" % line)
@@ -928,7 +927,7 @@ if __name__ == '__main__':
                 signal.pause()
             except KeyboardInterrupt:
                 raise SystemExit(1)
-        except socket.error, e:
+        except socket.error as e:
             LOG.error("server launch failed: %r\n" % e)
 
 # end