Question

我试图在第一天和第二天从电影列表中打印两个唯一的字符串。到目前为止，我已经尝试了random.choice，但后来我切换到了random.shuffle。我有两部电影放映，但两天都在播出，我不确定将这两部电影分开的步骤。

from flask import Flask
import random

app = Flask(__name__)

app.config['DEBUG'] = True      # displays runtime errors in the browser, too

@app.route("/")
def index():
    # choose a movie by invoking our new function
    movie = get_random_movie()

    # build the response string
    day1 = "<h1>Movie of the Day</h1>"
    day1 += "<ul>"
    day1 += "<li>" + movie + "</li>"
    day1 += "</ul>"

    # build the response string
    day2 = "<h1>Movie of the Day Tomorrow</h1>"
    day2 += "<ul>"
    day2 += "<li>" + movie + "</li>"
    day2 += "</ul>"

    return day1 + day2

def get_random_movie():
    movies = ["Akira", "Ghost In The Shell", "Princess Mononoke", "Kimi no na wa", "Howl's Moving Castle" ]
    random.shuffle(movies)
    return movies[1] + movies[2]



app.run()

这是我的输出

每日电影
哈尔的移动城堡阿基拉

今日电影明天
哈尔的移动城堡阿基拉

Answer 1

您可以将值封装为列表或使用列表切片：

[movies[1]] + [movies[2]]

或者：

movies[1:3]

Answer 2

你正在连接两个字符串，你想要的是从你的函数返回一个元组然后正确地分配值

from flask import Flask
import random

app = Flask(__name__)

app.config['DEBUG'] = True      # displays runtime errors in the browser, too

@app.route("/")
def index():
    # choose a movie by invoking our new function
    movie = get_random_movie()

    # build the response string
    day1 = "<h1>Movie of the Day</h1>"
    day1 += "<ul>"
    day1 += "<li>" + movie[0] + "</li>"
    day1 += "</ul>"

    # build the response string
    day2 = "<h1>Movie of the Day Tomorrow</h1>"
    day2 += "<ul>"
    day2 += "<li>" + movie[1] + "</li>"
    day2 += "</ul>"

    return day1 + day2

def get_random_movie():
    movies = ["Akira", "Ghost In The Shell", "Princess Mononoke", "Kimi no na wa", "Howl's Moving Castle" ]
    random.shuffle(movies)
    return (movies[1], movies[2])



app.run()

Python从列表中打印两个唯一的字符串

2 个答案: