gistfile1.py

In [1]: class Test(object):
   ...:     password = "asdf"
   ...:     @classmethod
   ...:     def printPass(cls):
   ...:         print cls.password
   ...:     @classmethod
   ...:     def printAsdf(cls):
   ...:         print "asdf"
   ...:         

In [2]: Test.printPass()
asdf

In [3]: Test.print
Test.printAsdf  Test.printPass  

In [5]: def classWNewPass(oldcls,newpass):
   ...:     class NewTestCls(oldcls):
   ...:         password = newpass
   ...:     return NewTestCls
   ...: 

In [6]: NTest = classWNewPass(Test,"jklo")

In [8]: Test.printPass()
asdf

In [9]: NTest.printPass()
jklo