EdX中的提交错误会让我退出麻省理工学院的课程吗？

Question

正如标题所说，

我在Edx.org上提交Pset时得到“EOFError”。 我做“计算机科学导论和使用Python编程”

问题集鼓励我使用raw_input（），但没有Stdin或任何其他输入控制台，因此给我这个错误：

>Traceback (most recent call last):

> File "submission.py", line 110, in <module>
>    hangman(secretWord)
>  File "submission.py", line 95, in hangman
>    userInput(lettersGuessed)
>  File "submission.py", line 9, in userInput
>    choice= raw_input("Please guess a letter: ").lower()
>EOFError: EOF when reading a line

import string
import random

    def userInput(lettersGuessed):

    choice= raw_input("Please guess a letter: ").lower()

    if len(choice)==1 and choice in string.ascii_lowercase: #this is to check wether the user misstyped a number or special character instead of letter"
        if choice not in lettersGuessed:
            return lettersGuessed.append(choice) ,validateGuess(choice)

        else:
            print "Oops! You've already guessed that letter: " + getGuessedWord(secretWord, lettersGuessed)
            return userInput(lettersGuessed)
    else:
        print "Only a single letter allowed!"
        return userInput(lettersGuessed)