Question

我正在学习python而且我不确定为什么下面代码的输出只是“False”而没有多少“false”如果我创建了一个循环并且dict列表有5个元素。我期待一个像你这样的产品 “假” “假” “假” “假”

"False"

movies = [{
      "name": "Usual Suspects"
    }, {
        "name": "Hitman",

    }, {
        "name": "Dark Knight",

    },{
        "name": "The Choice",

    }, {
        "name": "Colonia",}
  ]


def peliMayor(p):
    index= -1
    for n in movies:
        index= index + 1
        if (movies[index]['name'] == p):
            return print("True")
        else:
            return print("False")


peli = "Thriller"
peliMayor(peli)

Answer 1

你应该从你的for循环中移除return，因为它会破坏你的循环。此外，不需要if-else语句。您可以直接从比较movies[index]['name'] == p

打印布尔值

def peliMayor(p):
    index= -1
    for n in movies:
        index= index + 1
        print(movies[index]['name'] == p)

movies = [{'name': 'Usual Suspects'}, {'name': 'Hitman'},
          {'name': 'Dark Knight'}, {'name': 'The Choice'},
          {'name': 'Colonia'}]

peli = 'Thriller'
peliMayor(peli)

Answer 2

你应该从循环中删除return。以下代码将为您提供帮助。感谢。

movies = [{'name': 'Usual Suspects'}, {'name': 'Hitman'},
          {'name': 'Dark Knight'}, {'name': 'The Choice'},
          {'name': 'Colonia'}]


def peliMayor(p):
    index = -1
    for n in movies:
        index = index + 1
        if movies[index]['name'] == p:
            print 'True'
        else:
            print 'False'


peli = 'Thriller'
peliMayor(peli)

为什么不循环？

2 个答案: