human
Solve the following python programming problem given the following code:
def setUp(self) : 
    numpy.random.seed (((9 + 5) + 2015)) 
    self.tempdir = tempfile.mkdtemp () 
    with remember_cwd () : 
        os.chdir (self.tempdir) 
        self.f1_mock = { 
            
} 
        def make_mock_format_1(split) : 
            self.f1_mock [split] = { 
                
} 
            self.f1_mock [split] ['image'] = [numpy.random.randint (0, 256, (6, 6, 3)).astype ('uint8'), numpy.random.randint (0, 256, (5, 5, 3)).astype ('uint8')] 
            other_sources = ('label', 'height', 'width', 'left', 'top') 
            for source in other_sources : 
                self.f1_mock [split] [source] = [numpy.random.randint (0, 4, (2,)).astype ('uint8'), (10 * numpy.ones ((1,)).astype ('uint8'))] 
with tarfile.open ('{}.tar.gz'.format (split), 'w:gz') as tar_file : 
                os.mkdir (split) 
                for (i, image) in enumerate (self.f1_mock [split] ['image']) : 
                    Image.fromarray (image).save (os.path.join (split, '{}.png'.format ((i + 1)))) 
struct_path = os.path.join (split, 'digitStruct.mat') 
                with h5py.File (struct_path, 'w') as f : 
                    for source in other_sources : 
                        suffixes = [] 
                        for i in range (2) : 
                            suffix = 'i1{}{}'.format (source, i) 
                            suffixes.append ([suffix.encode ('utf8')]) 
                            name = 'digitStruct/{}'.format (suffix) 
                            f [name] = [[self.f1_mock [split] [source] [0] [i]]] 
name = 'digitStruct/image_1/{}'.format (source) 
                        f [name] = suffixes 
                        name = 'digitStruct/image_2/{}'.format (source) 
                        f [name] = [[self.f1_mock [split] [source] [1] [0]]] 
ref_dtype = h5py.special_dtype (ref = h5py.Reference) 
                    bbox = f.create_dataset ('digitStruct/bbox', (2, 1), dtype = ref_dtype) 
                    bbox [...] = [[f ['digitStruct/image_1'].ref], [f ['digitStruct/image_2'].ref]]...

    
    

    Fix the buggy line: 'y' : split.f2_extra_targets_mock ,
assistant
#Here is Python program to fix the buggy line: 'y' : split.

'y' : self.f2_extra_targets_mock ,