在循环Python中创建类 [英] Creating classes inside a loop Python
问题描述
我正在处理一个Python项目,我想做类似下一个示例的操作,但是不正确。我需要一些帮助!
names = ['name1','name2']
名称中的名称:
类名:
[声明]
谢谢!
class
语句需要一个硬编码的类名。但是,可以使用 type
函数来创建此类动态类。
names = ['name1','name2']
class_dict = {}
用于命名名称:
#准备d的语句
class_dict [name] = type(名称(对象)d)
此处, d
是一个字典,其中应包含您将在类中定义的所有属性和方法。 class_dict
用于存储您的 class
对象,因为将动态名称直接注入全局命名空间是一个坏主意。 / p>
以下是使用 type
函数创建类的具体示例。
d = {}
d ['foo'] = 5
def初始值设定项(self,x):
self.x = x + 6
d ['__ init__'] =初始值设定项
MyClass = type('MyClass',(object,),d)
这将产生与以下 class
语句相同的类。
class MyClass(object):
foo = 5
def __init __(self,x):
self.x = x + 6
I'm working on a Python project and I want to do something like the next example, but is incorrect. I need some help, please!
names = ['name1', 'name2']
for name in names:
class name:
[statements]
Thank you!
The class
statement requires a hard-coded class name. You can use the type
function, however, to create such dynamic classes.
names = ['name1', 'name2']
class_dict = {}
for name in names:
# statements to prepare d
class_dict[name] = type(name, (object,), d)
Here, d
is a dictionary that should contain any attributes and methods that you would have defined in your class. class_dict
is used to store your class
objects, as injecting dynamic names directly into the global namespace is a bad idea.
Here is a concrete example of using the type
function to create a class.
d = {}
d['foo'] = 5
def initializer(self, x):
self.x = x + 6
d['__init__'] = initializer
MyClass = type('MyClass', (object,), d)
This produces the same class as the following class
statement.
class MyClass(object):
foo = 5
def __init__(self, x):
self.x = x + 6
这篇关于在循环Python中创建类的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!