Question

我是Python的新手，正在开发一个bootcamp项目...而且我绝对比它需要的更难......

我最终要做的是创建以下内容：

姓名：泰坦尼克号\ n 导演：斯皮尔伯格\ n 年份：1997年\ n \ n
名称：The Matrix \ n 主任：Waskowskis \ n 年份：1996年\ n \ n

AFTER 我添加了“（A）dd电影功能......所以，首先，我似乎无法'退出'For循环...一旦我跑它，它只是无限期地重复......除此之外，如果我尝试使用“枚举”，我无法正确格式化。

这是我的代码:(我正在谈论的部分是在“def show_movies”功能下：

import sys
import random
import os
movies = []


def menu():
    global user_input
    print("Welcome to 'The Movie Program!!'")
    print("(A)dd movie to your list")
    print("(L)ist movies you've added")
    print("(S)earch for movies in your list")
    user_input = str(input("Which function would you like to do?:\n\n""Selection: ").capitalize())
    while user_input != 'Q':
        if user_input == 'A':
            add_movies()
        elif user_input == 'L':
            show_movies()
        elif user_input == 'A':
            search_movies()
        else:
            print("\n\n--Unknown command--Please try again.\n")
            print("Welcome to 'The Movie Program!!'")
            print("(A)dd movie to your list")
            print("(L)ist movies you've added")
            print("(S)earch for movies in your list")
            user_input = str(input("Which FUNCTION would you like to do?:\n\n""Selection: ").capitalize())


def add_movies():
    #name = (input('What is the title of the movie?: ').title())
    #director = str(input("Who was the director of this movie?: ").title())
    year = None
    while True:
        try:
            name = (input('What is the title of the movie?: ').title())
            director = str(input("Who was the director of this movie?: ").title())
            year = int(input("What was the release year?: "))
        except ValueError:
            print("Only numbers, please.")
            continue
        movies.append({
            "name": name,
            "director": director,
            "year": year
        })
        break
    menu()


    add_movies()


def show_movies():
        for movie in movies:
            print(f"Name: {movie['name']}")
            print(f"Director: {movie['director']}")
            print(f"Release Year: {movie['year']}\n")
            #continue
            #break


def search_movies():
    movies
    print("This is where you'd see a list of movies in your database")


menu()

Answer 1

问题出在你的while user_input != 'Q':循环中。

如果user_input等于L，则会调用show_movies()，但不会要求更多输入。它只围绕while循环，每次调用show_movies()。

每次循环时都应再次输入user_input，而不仅仅是else子句。

while user_input != 'Q':
    if user_input == 'A':
        add_movies()
    elif user_input == 'L':
        show_movies()
    elif user_input == 'A':
        search_movies()
    else:
        print("\n\n--Unknown command--Please try again.\n")
        print("Welcome to 'The Movie Program!!'")
        print("(A)dd movie to your list")
        print("(L)ist movies you've added")
        print("(S)earch for movies in your list")
    # the next line is now outside your `else` clause
    user_input = str(input("Which FUNCTION would you like to do?:\n\nSelection: ").capitalize())

退出For Loop＆amp;枚举（Python）

1 个答案: