如何打印用户指定对象的属性？

Question

我希望用户输入对象的名称，并能够在输入后处理他们的选择。这就是我的想法

class somebody:
  def __init__(self, location, age, sport):
    self.location = location
    self.age = age
    self.sport = sport
    
nick = somebody('Houston','22','football')
david = somebody('College Station','25','swimming')
peter = somebody('Austin','15','track')

choose_a_person = input('Enter the name of a person: ') #identify which person they are asking about

print('Location is', choose_a_person.location)
print('Age is', choose_a_person.age)
print('Sport is', choose_a_person.sport)

但显然输入的Choose_a_person将仍然是一个没有属性的字符串。还有其他方法可以做到这一点吗？我不想通过一系列 if 语句运行输入来确定要打印哪个对象，因为我计划增加此类中的对象数量。

Answer 1

将您的人员存储在 a 中dict，然后获取名称：

class Somebody:
    def __init__(self, location, age, sport):
        self.location = location
        self.age = age
        self.sport = sport


nick = Somebody('Houston', '22', 'football')
david = Somebody('College Station', '25', 'swimming')
peter = Somebody('Austin', '15', 'track')

persons = {
    'nick': nick,
    'david': david,
    'peter': peter
}

name = input('Enter the name of a person: ')  # identify which person they are asking about

choose_a_person = persons[name]


print('Location is', choose_a_person.location)
print('Age is', choose_a_person.age)
print('Sport is', choose_a_person.sport)

另外，作为一般建议，类名以大写字母开头。