Using Random Once in a While loop

I'm having a bit of a problem using classes while using a random in a while loop. The goal is the first time to generate a random string and to use that throughout the lesson. Here are the four lines with the problem.

def run_review(self, key_history):
        level = reviewer.ReviewLesson(self.history_list)
        if self.counter:
            self.word = level.review()
            level.review_lesson()
            self.counter = False
        if self.counter == False:
            level.review_lesson()

from another module

def review(self): 
        self.word = ' '
        shuffled_list = sorted(self.history_list, key=lambda k: random.random())
        for item in shuffled_list:
            self.word = item+self.word
        self.word = self.word*7
        return self.word


    def review_lesson(self):
        word = ''
        self.word = word+self.word
        return self.word

The issue is after the first block the review_lesson is an empty space since level.review() is not called, however if level.review is called it then becomes another random sequence.