python generator

gistfile1.py

>>> def temp():
...     print 'called'
...     for lp in [1,2,3,4,5]:
...             print 'called:' + str(lp)
...             yield lp
... 
>>> gen = temp()
>>> for index in gen:
...     pass
... 
called
called:1
called:2
called:3
called:4
called:5
>>>