python 书籍中例子出错：NameError: global name 'question' is not defined

survey.py
class AnonymousSurvey():
    def __init__(self, question):
        self.question = question
        self.resp**es = []
    def show_question(self):
        print(question)
    def store_resp**e(self, new_resp**e):
        self.resp**es.append(new_resp**e)
    def show_results(self):
        print("Survey results:")
        for resp**e in resp**es:
            print('- ' + resp**e)

language_survey.py
from survey import AnonymousSurvey
question = "What language did you first learn to speak?"
my_survey = AnonymousSurvey(question)
my_survey.show_question()
print("Enter 'q' at any time to quit.\n")
while True:
    resp**e = input("Language: ")
    if resp**e == 'q':
        break
    my_survey.store_resp**e(resp**e)
print("\nThank you to everyone who participated in the survey!")
my_survey.show_results()

运行出错：
  File "C:/Users/robin/.PyCharm2018.1/config/scratches/language_survey.py", line 4, in <module>
    my_survey.show_question()
  File "C:\Users\robin\.PyCharm2018.1\config\scratches\survey.py", line 9, in show_question
    print(question)
NameError: global name 'question' is not defined
Process finished with exit code 1

没问题，看看python版本

定义class里的show_question 里要print(self.question),后面show result 也应该是for respo nse in self.respo nses,漏了self。

pthon版本是2.7.12版本，加上self就ok了，多谢