human
Solve the following python programming problem given the following code:
# %load test_height.py
from nose.tools import assert_equal

class TestHeight(object):

    def test_height(self):
        root = Node(5)
        assert_equal(height(root), 1)
        insert(root, 2)
        insert(root, 8)
        insert(root, 1)
        insert(root, 3)
        assert_equal(height(root), 3)

        print('Success: test_height')

def main():
    test = TestHeight()
    test.test_height()

if __name__ == '__main__':
    main()
Given the above code, generate some markdown instructions for it.
assistant
#Here is the Python program you requested.

Unit Test
The following unit test is expected to fail until you solve the challenge.