python-broadlink: Can't Enter Learning Mode

Attempting to enter learning mode throws an error as below;

Python 2.7.12 (default, Nov 19 2016, 06:48:10)
>>> import broadlink
>>> devices = broadlink.discover(timeout=5)
>>> devices[0].auth()
True
>>> devices[0].host
('192.168.1.155', 80)
>>> devices[0].enter_learning()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: device instance has no attribute 'enter_learning'