shivayogi kumbar wrote: > sir, > I would like to know about 'asser't keyword how it works in the > fallowing program
I'm not sure what the question is. Do you not understand assert at all or is there something about how this program works that you don't understand? assert is documented here: http://docs.python.org/ref/assert.html#l2h-461 Simplified a little, assert myClass.count>0 is essentially the same as if not myClass.count>0: raise AssertionError assert is usually used to verify an assumption about the state of a program at some point. The usage here doesn't really make sense, as myClass.count can legitimately be 0. A better assertion would be assert myClass.count>=0 since you would expect this to always be true. Kent > class myClass: > count = 0 > def __init__(self): > myClass.count = myClass.count + 1 > def __del__(self): > myClass.count =myClass.count -1 > assert myClass.count>0 > def howmany(self): > return myClass.count > > >>>a=myClass() > >>>>b=myClass() >>>>a.howmany() >>>>del b >>>>del a > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > > _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
