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+.. _bind-method:
+
+Binding a method to a class
+---------------------------
+
+Python 2 draws a distinction between bound and unbound methods, whereas
+in Python 3 this distinction is gone: unbound methods have been removed
+from the language. To bind a method to a class compatibly across Python
+3 and Python 2, you can use the :func:`bind_method` helper function::
+
+    from future.utils import bind_method
+
+    class Greeter(object):
+        pass
+
+    def greet(self, message):
+        print(message)
+
+    bind_method(Greeter, 'greet', greet)
+
+    g = Greeter()
+    g.greet('Hi!')
+
+
+On Python 3, calling ``bind_method(cls, name, func)`` is equivalent to
+calling ``setattr(cls, name, func)``. On Python 2 it is equivalent to::
+
+    import types
+    setattr(cls, name, types.MethodType(func, None, cls))