获取某个键的值，它的部分属性为 class

Question

When i try to get the value of "h"

class Humanoid():
    def __init__(self):
        self.body = {"h":1, "a":2, "l":2}
        self.needs = ["n"]
        self.move = False

Using the.get method

nn = Humanoid.body.get("h")

i get this error

nn = Humanoid.body.get("h") AttributeError: type object 'Humanoid' has no attribute 'body'

Answer 1

Here, body is an instance attribute so you need to instantiate the class to access its instance attributes:

class Humanoid:
    def __init__(self):
        self.body = {"h": 1, "a": 2, "l": 2}
        self.needs = ["n"]
        self.move = False

humanoid = Humanoid()
print(humanoid.body.get("h"))

Or convert the instance attribute to a class attribute, like:

class Humanoid:
    body = {"h": 1, "a": 2, "l": 2}

    def __init__(self):
        self.needs = ["n"]
        self.move = False

print(Humanoid.body.get("h"))

Answer 2

You have to instantiate the class object.

human = Humanoid()

human.body.get("h")