Question

我在python中有一个对象数组。如何遍历数组并将任何具有重复名称的对象设置为

valid=False

这是我的测试代码：

class Asset(object):
    def __init__(self, name=""):
        self.name = name
        self.valid = True

items = [
    Asset("doug"),
    Asset("kevin"),
    Asset("kim"),
    Asset("kevin")
]

for x in items:
    print vars(x)

所以实际上这个测试的结果应该是：

> {'name': 'doug', 'valid': True} 
> {'name': 'kevin', 'valid': False}
> {'name': 'kim', 'valid': True} 
> {'name': 'kevin', 'valid': False}

Answer 1

使用hashmaps / dictionary可能是合适的。

class Asset(object):
    def __init__(self, name=""):
        self.name = name
        self.valid = True

items = [
    Asset("doug"),
    Asset("kevin"),
    Asset("kim"),
    Asset("kevin")
]

frequency_of_names = {}

for item in items:
    name = item.name
    if name in frequency_of_names.keys():
        frequency_of_names[name] = frequency_of_names[name] + 1
    else:
        frequency_of_names[name] = 1

for item in items:
    if frequency_of_names[item.name] > 1:
        item.valid = False

for item in items:
    print item.name, item.valid

输出：

doug True
kevin False
kim True
kevin False

Answer 2

使用列表理解和计数方法：

[OneSignal initWithLaunchOptions:launchOptions appId:ONESIGNAL_APPID handleNotificationReceived:nil handleNotificationAction:nil
                            settings:@{kOSSettingsKeyInAppAlerts:@NO}];

在python中设置重复数组项的属性

2 个答案: