Question

所以标题可能没有意义。但这是代码：

def play_game(ml_string, blanks, selectedLevel):


replaced = []
ml_string = ml_string.split()
currentQuestion = 0


for blank in ml_string:
    replacement = blank_in_quiz(blank, blanks,)
    if replacement != None:
        user_input = raw_input("Type in the answer for blank " + replacement + " ")
        while user_input != allanswers[selectedLevel][currentQuestion]:
            print "Incorrect!"
            user_input = raw_input("Type in the answer for blank " + replacement + " ")
        else:
            blank = blank.replace(replacement, user_input)
            replaced.append(blank)
            print "\nCorrect!\n"
            print " ".join(replaced + [currentQuestion,ml_string])
            currentQuestion = currentQuestion + 1
    else:
        replaced.append(blank)
replaced = " ".join(replaced)
print replaced

基本上它的作用是取这个字符串，即ml_string：

"The movie __1__ is a war movie directed by __2__ Nolan about the __3__ and French armies stranded on the __4__ of Dunkirk while the __5__ army closed in on them."

一旦用户在空白处添加了正确的答案，我就会尝试打印出填空的答案，以及其余的测验，并且还有他们尚未回答的空白。

我是python的初学者，但我总是在使用列表和索引值。如果您想查看完整内容：https://repl.it/KTJh/16

第55行是我遇到的麻烦。感谢您的任何建议。

Answer 1

您可以使用string formatting创建带有占位符（replacement_field）的字符串，这些字符串会填充一些预定义变量，因为用户回答您只需更改变量。格式规范允许命名占位符

s = "The movie {ans1} is a war movie directed by {ans2} Nolan about the {ans3} and French armies stranded on the {ans4} of Dunkirk while the {ans5} army closed in on them."

这样可以方便地用字典填充占位符

d = {'ans1' : '__1__', 'ans2' : '__2__',
     'ans3' : '__3__', 'ans4' : '__4__',
     'ans5' : '__5__'}

你这样使用它：

>>> s.format(**d)
'The movie __1__ is a war movie directed by __2__ Nolan about the __3__ and French armies stranded on the __4__ of Dunkirk while the __5__ army closed in on them.'

更改这样的答案

>>> d['ans1'] = 'Ziegfield Follies'
>>> s.format(**d)
'The movie Ziegfield Follies is a war movie directed by __2__ Nolan about the __3__ and French armies stranded on the __4__ of Dunkirk while the __5__ army closed in on them.'
>>>

Answer 2

假设您正在使用最新的Python学习（3.6），您可以使用f-strings。花括号中的项可以是大多数Python表达式。在这种情况下，他们索引一个单词列表：

import textwrap

def paragraph(words):
    s = f'The movie {words[0]} is a war movie directed by {words[1]} Nolan about the {words[2]} and French armies stranded on the {words[3]} of Dunkirk while the {words[4]} army closed in on them.'
    print()
    print(textwrap.fill(s))

words = '__1__ __2__ __3__ __4__ __5__'.split()
paragraph(words)
words[0] = 'Dunkirk'
paragraph(words)

输出：

The movie __1__ is a war movie directed by __2__ Nolan about the __3__
and French armies stranded on the __4__ of Dunkirk while the __5__
army closed in on them.

The movie Dunkirk is a war movie directed by __2__ Nolan about the
__3__ and French armies stranded on the __4__ of Dunkirk while the
__5__ army closed in on them.

将某些内容添加到字符串后，如何打印修改以及字符串的其余部分？

2 个答案: