>>> a = 'aa' >>> b = None >>> c = a or 'cc' >>> d = b or 'dd' >>> c 'aa' >>> d 'dd' >>> nevin 'loves Python'

nnevvinn: >>> a = 'aa'
>>> b = None
>>> c = a or 'cc'
>>> d = b or 'dd'
>>> c
'aa'
>>> d
'dd'
>>> nevin
'loves Python'