Python3基础 delattr 删除对象的属性

 

•        Python : 3.7.0
•          OS : Ubuntu 18.04.1 LTS
•         IDE : PyCharm 2018.2.4
•       Conda : 4.5.11
•    typesetting : Markdown

 

code

"""
@Author : 行初心
@Date   : 18-9-23
@Blog   : www.cnblogs.com/xingchuxin
@Gitee  : gitee.com/zhichengjiu
"""

class MyClass:
    # num是类属性
    num = 1

    def __init__(self, name):
        self.name = name

def main():
    test = MyClass("shemingli")

    # 删除类属性
    # 删除类属性要写类名，而不是实例名
    delattr(MyClass, "num")

    # 删除实例属性
    delattr(test, "name")

    """
        def delattr(o: Any, name: str)
        Inferred type: (o: Any, name: str) -> None

        Deletes the named attribute from the given object.
        delattr(x, 'y') is equivalent to ``del x.y''
    """
    # 注：如果属性不存在，就抛出异常

if __name__ == '__main__':
    main()

 

result

/home/coder/anaconda3/envs/py37/bin/python /home/coder/PycharmProjects/oop/demo.py

Process finished with exit code 0

 

resource

• [文档] docs.python.org/3
• [规范] www.python.org/dev/peps/pep-0008
• [规范] zh-google-styleguide.readthedocs.io/en/latest/google-python-styleguide/python_language_rules
• [源码] www.python.org/downloads/source
• [ PEP ] www.python.org/dev/peps
• [平台] www.cnblogs.com
• [平台] gitee.com

 

---

Python具有开源、跨平台、解释型、交互式等特性，值得学习。

Python的设计哲学：优雅，明确，简单。提倡用一种方法，最好是只有一种方法来做一件事。

代码的书写要遵守规范，这样有助于沟通和理解。

每种语言都有独特的思想，初学者需要转变思维、踏实践行、坚持积累。