类定义时初始化类属性，不需要函数。import numpy as np
class Foo:
bar = np.range(100)
def __init__(self):
# etc.
如果要在导入后，调用的函数，但是在实例化类之前，可以定义一个类函数。class Foo:
@classmethod
def initialize_bar(cls):
cls.bar = np.range(100)
然后。>>> from foopackage import Foo
>>> Foo.bar
Traceback (most recent call last):
File"", line 1, in
AttributeError: type object 'Foo' has no attribute 'bar'
>>> Foo.initialize_bar()
>>> Foo.bar
array([ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50,
51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67,
68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84,
85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99])
python 中定义的函数 如何在main中调用_在python中 在定义类时自动运行函数的方法？_class_酷徒编程知识库...
