Does Python have something like anonymous inner classes of Java?

Question

In Java you can define a new class inline using anonymous inner classes. This is useful when you need to rewrite only a single method of the class.

Suppose that you

Answer 1

In python you have anonymous functions, declared using lambda statement. I do not like them very much - they are not so readable, and have limited functionality.

However, what you are talking about may be implemented in python with a completely different approach:

class a(object):
  def meth_a(self):
    print "a"

def meth_b(obj):
  print "b"

b = a()
b.__class__.meth_a = meth_b