human
Solve the following python programming problem given the following code:
@ contextmanager 
def _test_deprecation(deprecation_expected = True) : 
    with warnings.catch_warnings (record = True) as seen_warnings : 
        def assert_deprecation_warning() : 
            if deprecation_expected : 
                assert (len (seen_warnings) == 1) 
                warning = seen_warnings [0] 
                assert isinstance (warning.message, DeprecationWarning) 
                return warning.message 
else : 
                assert (len (seen_warnings) == 0) 
warnings.simplefilter ('always') 
        assert (len (seen_warnings) == 0) 
        (yield deprecation_expected) 
        assert_deprecation_warning () 

    
    

    Fix the buggy line: (yield deprecation_expected)
assistant
#Here is Python code to fix the buggy line: (yield deprecation_expected)
.

(yield assert_deprecation_warning)