68、Python 元类与文档编写全解析

Python 元类与文档编写全解析

1. Python 元类相关知识

1.1 插件加载系统

在 Python 中，有时会涉及插件加载系统。代码示例如下：

if isinstance(cls.name, str):
    metaclass.plugins[cls.name] = cls
return cls

@classmethod
def get(cls, name):
    return cls.plugins[name]

@classmethod
def load_directory(cls, module, directory):
    for file_ in os.listdir(directory):
        name, ext = os.path.splitext(file_)
        full_path = os.path.join(directory, file_)
        import_path = [module]
        if os.path.isdir(full_path):
            import_path.append(file_)
        elif ext == '.py' and MODULE_NAME_RE.match(name):
            import_path.append(name)
        else:
            # Ignoring non-matching files/directories
            continue
        plugin =