any ways to judge whether an object is initilized or not in a class

[momobear]

hi, I am puzzled about how to determine whether an object is
initilized in one class, anyone could give me any instructions?
here is an example code:

class coffee:
         def  boil(self):
               self.temp = 80

a = coffer()
if a.temp > 60:
     print "it's boiled"

in C++ language we must initilized a variable first, so there is no
such problem, but in python if we don't invoke a.boil(), we will not
get self.temp to be initilized, any way to determine if it's initilzed
before self.temp be used.