Python时间戳与App Engine Python 2.5 / 2.7不同

Question

Python datetime.fromtimestamp在App Engine Python 2.5与2.7上返回不同的值。

http://shell.appspot.com/

Google App Engine/1.6.6
Python 2.5.2 (r252:60911, May 17 2011, 11:51:03) 
[GCC 4.3.1]

>>> import datetime
>>> print datetime.datetime.fromtimestamp(4102444800)
2100-01-01 00:00:00

http://shell-27.appspot.com/

Google App Engine/1.6.6
Python 2.7.2 (default, Dec 14 2011, 14:36:31) 
[GCC 4.4.3]

>>> import datetime
>>> print datetime.datetime.fromtimestamp(4102444800)
1963-11-25 17:31:44

2.5实例返回所需的值。我错过了什么？

Answer 1

2.5：

Google App Engine/1.6.6
Python 2.5.2 (r252:60911, May 17 2011, 11:51:03) 
[GCC 4.3.1]

>>> import sys
>>> sys.maxint
9223372036854775807

2.7：

Google App Engine/1.6.6
Python 2.7.2 (default, Dec 14 2011, 14:36:31) 
[GCC 4.4.3]

>>> import sys
>>> sys.maxint
2147483647