human
Solve the following python programming problem given the following code:
@ mock.patch ('treq.client.uuid.uuid4', mock.Mock (return_value = 'heyDavid')) 
def test_request_mixed_params(self) : 
    class NamedFile (BytesIO) : 
        def __init__(self, val) : 
            BytesIO.__init__ (self, val) 
            self.name = 'image.png' 
self.client.request ('POST', 'http://example.com/', data = [('a', 'b'), ('key', 'val')], files = [('file1', ('image.jpg', BytesIO (b'hello'))), ('file2', NamedFile (b'yo'))]) 
    self.agent.request.assert_called_once_with (b'POST', b'http://example.com/', Headers ({ 
        b'accept-encoding' : [b'gzip'], 
        b'Content-Type' : [b'multipart/form-data.
boundary=heyDavid'], 
}), self.MultiPartProducer.return_value) 
    FP = self.FileBodyProducer.return_value 
    self.assertEqual (mock.call ([('a', 'b'), ('key', 'val'), ('file1', ('image.jpg', 'image/jpeg', FP)), ('file2', ('image.png', 'image/png', self))], boundary = b'heyDavid'), self.MultiPartProducer.call_args) 

    
    

    Fix the buggy line: self.assertEqual (mock.call ([('a', 'b'), ('key', 'val'), ('file1', ('image.jpg', 'image/jpeg', FP)), ('file2', ('image.png', 'image/png', self))], boundary = b'heyDavid'), self.MultiPartProducer.call_args)
assistant
#Here is Python program to fix the buggy line: self.

self.assertEqual (mock.call ([('a', 'b'), ('key', 'val'), ('file1', ('image.jpg', 'image/jpeg', FP)), ('file2', ('image.png', 'image/png', FP))], boundary = b'heyDavid'), self.MultiPartProducer.call_args)