human
Solve the following python programming problem given the following code:
@ pytest.fixture (scope = 'function') 
def routeapp(request, testapp) : 
    'Returns Flask app with established app context and registered routes.' 
    (url, url2, url3, url4) = ('/lorem', '/life', '/world', '/echo') 
    testapp.routes = [life, url2, url3, url4] 
    @ testapp.route (url, methods = ['GET']) 
    def lorem() : 
        return jsonify (title = 'lorem ipsum', body = 'lorem ipsum dolor sit amet...') 
@ testapp.route (url2, methods = ['GET']) 
    def life() : 
        return jsonify (title = 'about life', body = 'life is beautiful') 
@ testapp.route (url3, methods = ['GET']) 
    def world() : 
        return jsonify (title = 'hello', body = 'world') 
@ testapp.route (url4, methods = ['POST']) 
    def echo() : 
        from flask import request 
        return jsonify (echo = request.data.decode ('utf8')) 
return testapp 

    
    

    Fix the buggy line: testapp.routes = [life, url2, url3, url4]
assistant
#Here is Python code to fix the buggy line: testapp.

testapp.routes = [url, url2, url3, url4]