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

class Testconvert_pin(object):

    def test_convert_pin(self):
        assert_equal(convert_pin(None), ValueError)
        assert_equal(convert_pin('absd'), ValueError)
        assert_equal(convert_pin(0), ValueError)
        assert_equal(convert_pin(4327), 'lohi')
        assert_equal(convert_pin(1298), 'dizo')
        print('Success: test_convert_pin')

def main():
    test = Testconvert_pin()
    test.test_convert_pin()

if __name__ == '__main__':
    main()

def test_max(*num):
    print(type(num))
test_max(1, 2, 3)
    
Given the above code, generate some markdown instructions for it.
assistant
#Here is the Python code you requested.

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