[root@dba-test hexinyunwei]# python

Python 2.6.6 (r266:84292, Feb 22 2013, 00:00:18) 

[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import time

>>> t = time.localtime(time.time())

>>> ti = '%d' % (t.tm_hour*60+t.tm_min)

>>> print ti

652

>>> if ti <= 655:

...  print 'ok'

... 

>>> tim = ti = '%d' % 653

>>> tim = '%d' % 653

>>> print tim

653

>>> print ti

653

>>> ti = '%d' % (t.tm_hour*60+t.tm_min)

>>> print ti

652

>>> if ti <= tim:

...  print 'ok'

... 

ok

>>> if ti >= 655:

...  print 'ok'

... 

ok

>>> if 3 < 2:

...  print 'ok'

... 

>>> if 3 < 4:

...  print 'ok'

... 

ok

>>> 

说明python 默认数字是大于字符窜的，最好同类型进行比较