Drop support for Python 2.3

There is no specific reason for this right now, but keeping support for
old Python versions around indefinitely increases the maintenance
burden.  The oldest supported Python version is now Python 2.4, which is
still shipped in RHEL/CentOS 5 by default.

In configure, add a check for the required Python version and give a
friendly error message for an old version, instead of relying on an
obscure build error later on.

2 files changed, 4 insertions, 12 deletions

diff --git a/contrib/hstore_plpython/expected/hstore_plpython.out b/contrib/hstore_plpython/expected/hstore_plpython.out
index b0025c04a81..df49cd5f373 100644
--- a/contrib/hstore_plpython/expected/hstore_plpython.out
+++ b/contrib/hstore_plpython/expected/hstore_plpython.out
@@ -6,9 +6,7 @@ LANGUAGE plpythonu
 TRANSFORM FOR TYPE hstore
 AS $$
 assert isinstance(val, dict)
-i = list(val.items())
-i.sort()
-plpy.info(i)
+plpy.info(sorted(val.items()))
 return len(val)
 $$;
 SELECT test1('aa=>bb, cc=>NULL'::hstore);
@@ -24,9 +22,7 @@ LANGUAGE plpython2u
 TRANSFORM FOR TYPE hstore
 AS $$
 assert isinstance(val, dict)
-i = list(val.items())
-i.sort()
-plpy.info(i)
+plpy.info(sorted(val.items()))
 return len(val)
 $$;
 SELECT test1n('aa=>bb, cc=>NULL'::hstore);
diff --git a/contrib/hstore_plpython/sql/hstore_plpython.sql b/contrib/hstore_plpython/sql/hstore_plpython.sql
index d55bedaf505..911bbd67fed 100644
--- a/contrib/hstore_plpython/sql/hstore_plpython.sql
+++ b/contrib/hstore_plpython/sql/hstore_plpython.sql
@@ -7,9 +7,7 @@ LANGUAGE plpythonu
 TRANSFORM FOR TYPE hstore
 AS $$
 assert isinstance(val, dict)
-i = list(val.items())
-i.sort()
-plpy.info(i)
+plpy.info(sorted(val.items()))
 return len(val)
 $$;
 
@@ -22,9 +20,7 @@ LANGUAGE plpython2u
 TRANSFORM FOR TYPE hstore
 AS $$
 assert isinstance(val, dict)
-i = list(val.items())
-i.sort()
-plpy.info(i)
+plpy.info(sorted(val.items()))
 return len(val)
 $$;