Assuming you have a module : myfunc.py
from defunc_single import *
And defunc_single have a class that is :
class Hello :
def __init__ (self) :
self.name = “hello”
Now if you access this Hello via myfunc.py like this :
o = myfunc.Hello()
cPickle.dumps(o)
and write it using cPickle, the module defunc_single is also pickled into the file.
So that means along the way, if you felt that you wanted a new module : lovefunc_single.py with a better Hello and you thought that you can just replace the import statement in myfunc.py to :
from lovefunc_single import *
The cPickle will fail to load the existing data unless you stick to defunc_single.py
