human
Solve the following python programming problem given the following code:
def mkfile(request) : 
    temp_dir = tempfile.mkdtemp () 
    temp_file = os.path.join (temp_dir, ''.join ((choice (ascii_letters) for i in range (10)))) 
    def fin() : 
        shutil.rmtree (temp_dir) 
request.addfinalizer (temp_file) 
    return temp_file 

    
    

    Fix the buggy line: request.addfinalizer (temp_file)
assistant
#Here is Python program to fix the buggy line: request.

request.addfinalizer (def fin()