python - 如何检查 python 类列表中的值？

Question

你好我定义一个类person如下:

class Person(object):
    def __init__(self, X, Y):
        self.name = X
        self.city = Y
names = ['Bob', 'Alex', 'John']
cities = ['New York', 'London', 'Rome']
N = list()
for i in range(0,3):
    x = names[i]
    y = cities[i]
    N.append(Person(x,y))

我想自动查询一个名字对应的城市，像这样

N.name['Bob'].city =
'New York'

Answer 1

创建一个以名字为键的字典:

class Person(object):
    def __init__(self, name, city):
        self.name = name
        self.city = city
names = ['Bob', 'Alex', 'John']
cities = ['New York', 'London', 'Rome']

persons = {n: Person(n,c) for n,c in zip(names, cities)}

print(persons['Bob'].city)