human
Solve the following python programming problem given the following code:
@ httprettified 
@ within (two = microseconds) 
def test_callback_response(now) : 
    'HTTPretty should all a callback function to be set as the body with httplib2' 
    def request_callback(request, uri, headers) : 
        return [200, headers, 'The {0} response from {1}'.format (decode_utf8 (request.method), uri)] 
HTTPretty.register_uri (HTTPretty.GET, 'https://api.yahoo.com/test', body = now) 
    (headers1, body1) = httplib2.Http ().request ('https://api.yahoo.com/test', 'GET') 
    expect (body1).to.equal (b'The GET response from https://api.yahoo.com/test') 
    HTTPretty.register_uri (HTTPretty.POST, 'https://api.yahoo.com/test_post', body = request_callback) 
    (headers2, body2) = httplib2.Http ().request ('https://api.yahoo.com/test_post', 'POST') 
    expect (body2).to.equal (b'The POST response from https://api.yahoo.com/test_post') 

    
    

    Fix the buggy line: HTTPretty.register_uri (HTTPretty.GET, 'https://api.yahoo.com/test', body = now)
assistant
#Here is Python code to fix the buggy line: HTTPretty.

HTTPretty.register_uri (HTTPretty.GET, 'https://api.yahoo.com/test', body = request_callback)