我是Python的初学者,我的项目类有问题。所以结构如下:
main.py(首先,main创建世界实例)
from world import World
world = World()
World了解所有其他类的所有内容(根据需要导入所有内容),并使用内容从继承类PersonAttributes(其中"全局"变量存储以便所有类可以访问它们)初始化以前的空列表。 / p>
PersonAttributes
class PersonAttributes:
MALE_NAMES = []
FEMALE_NAMES = []
SURNAMES = []
PROFESSIONS = []
BABY = None
CHILD = None
TEEN = None
YOUNGADULT = None
ADULT = None
SENIOR = None
LIFESTAGES = (BABY, CHILD, TEEN, YOUNGADULT, ADULT, SENIOR)
世界
from utilities.person_attributes import PersonAttributes
from life_stage import Baby, Child, Teen, YoungAdult, Adult, Senior
class World(PersonAttributes):
def __init__(self):
# Initialize names from files
self.MALE_NAMES = self.get_male_names()
self.FEMALE_NAMES = self.get_female_names()
self.SURNAMES = self.get_surnames()
self.PROFESSIONS = self.get_professions()
# Initialize life stages
self.BABY = Baby(None, None, None, None)
self.CHILD = Child(None, None, None, None)
self.TEEN = Teen(None, None, None, None)
self.YOUNGADULT = YoungAdult(None, None, None, None)
self.ADULT = Adult(None, None, None, None)
self.SENIOR = Senior(None, None, None, None)
self.population = []
self.populate_world()
World还会导入LifeStage类,其中包含从Person继承的不同类。 YoungAdult的例子(问题出在哪里)
class YoungAdult(Person):
def __init__()
self.occupation = Randomizer().get_random_list_item(self.PROFESSIONS)
人
from utilities.person_attributes import PersonAttributes
class Person(PersonAttributes):
def __init__():
super(Person, self).__init__()
所以问题是自我.PROFESSIONS。我已经在世界中初始化了它,但是当我实例化YoungAdult时,(self.YOUNGADULT = YoungAdult(None,None,None,None)),PersonAttributes中的PROFESSIONS列表为空。为什么会发生这种情况,我该如何解决?我无法摆脱self.occupation属性,因为YoungAdult课程需要在青少年时期自动拥有职业。我希望你们能够理解我的意思,提前谢谢!
答案 0 :(得分:1)
类和实例属性之间只有一个区别。这可能会有所启发:
>>> class K:
... a = 1
... def set_a(self, v):
... self.a = v
...
>>> k = K()
>>> K.a
1
>>> k.a
1
>>> k.set_a(3)
>>> k.a
3
>>> K.a
1
>>> K.a = 5
>>> l = K()
>>> l.a
5
>>> k.a
3
只要您设置k.a
(即使是通过self.a
),它就会隐藏K.a
。