队列 Python 用户输入

Question

我是 Python 语言的新手，我们的教授给了我们 activity 关于创建队列列表的知识，但我很困惑如何去做。任务是显示用户输入的电影和零食。每次按 S 时，零食都会被移除。我希望有人能解释为什么会发生这种情况以及我应该添加什么。非常感谢。

Movies = [];
movie = str (input ("Enter a movie 1 of 3: "));
Movies.append(movie)
movie = str (input ("Enter a movie 2 of 3: "));
Movies.append(movie)
movie = str (input ("Enter a movie 3 of 3: "));
Movies.append(movie)

Snack = [];
snack = str (input ("Enter snack 1 of 3: "));
Snack.append(snack)
snack = str (input ("Enter snack 2 of 3: "));
Snack.append(snack)
snack = str (input ("Enter snack 3 of 3: "));
Snack.append(snack)

print("Movies to watch are ", Movies);

print("Snacks available are ", snack);

print("Press S each time you finish a snack.");
eat = input();
if str.lower(eat)== "s":
 print (snack.pop());
 print (snack);

Output: 

Enter a movie 1 of 3: Avengers 
Enter a movie 2 of 3: Forrest Gump
Enter a movie 3 of 3: Lucy
Enter snack 1 of 3: Milktea
Enter snack 2 of 3: Pizza
Enter snack 3 of 3: Fries
Movies to watch are  ['Avengers', 'Forrest Gump', 'Lucy']
Snacks available are  fries #this is my problem
Press S each time you finish a snack.
S

Answer 1

在 python 中变量是 case-sensitive，在最后一部分你重叠了 snack 和 Snack 所以尝试：

print("Movies to watch are ", Movies);

print("Snacks available are ", Snack);

print("Press S each time you finish a snack.");
eat = input();
if str.lower(eat)== "s":
 print (Snack.pop());
 print (Snack);

队列 Python 用户输入

Queue Python User Input

python

user-input

append