Question aboud #80 - itersize in cursor dic

Hi!
Thank for great library.
Dear group users, please help me with understanding of situation.

in psycopg2 extras.py

in 2.4.4 was:
89 def __iter__(self):
90 if self._prefetch:
91 res = _cursor.fetchmany(self, self.itersize)
92 if not res:
93 return
94 if self._query_executed:
95 self._build_index()
96 if not self._prefetch:
97 res = _cursor.fetchmany(self, self.itersize)
98
99 for r in res:
100 yield r
101
102 # the above was the first itersize record. the following are
103 # in a repeated loop.
104 while 1:
105 res = _cursor.fetchmany(self, self.itersize)
106 if not res:
107 return
108 for r in res:
109 yield r
110

in 2.4.5 became:
def __iter__(self):
if self._prefetch:
res = _cursor.__iter__(self)
first = res.next()
if self._query_executed:
self._build_index()
if not self._prefetch:
res = _cursor.__iter__(self)
first = res.next()

yield first
while 1:
yield res.next()

----------------------------------------------------------------------------
and now iterating over named cursor return 1 row, not many

Please help, should i use cursor.fetchmany instead?
Or how use itersize? (Why itersize not working)

Thank You

Alex