[英]generic Class in Python
我想用一种方法在 Python 中做一个泛型类
我知道没有元类是行不通的,但我不知道如何应用它们:)
是这样的:
class GenericClass:
attr_a = ''
attr_b = ''
def count(text):
return len(text)/attr_a + attr_b
class A(GenericClass):
attr_a = 2
attr_b = 1
text = "Hello, I'm under the water"
print(A.count(text))
# 14
将count
定义为类方法将使它起作用:
@classmethod
def count(cls, text):
return len(text) / cls.attr_a + cls.attr_b
class GenericClass:
def _count(text, a, b):
return len(text)/a + b
class A(GenericClass):
attr_a = 2
attr_b = 1
def count(text):
return GenericClass._count(text, A.attr_a, A.attr_b)
text = "Hello, I'm under the water"
print(A.count(text))
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