def deprecatedModuleAttribute(version, message, moduleName, name):
    """
    Declare a module-level attribute as being deprecated.

    @type version: L{incremental.Version}
    @param version: Version that the attribute was deprecated in

    @type message: C{str}
    @param message: Deprecation message

    @type moduleName: C{str}
    @param moduleName: Fully-qualified Python name of the module containing
        the deprecated attribute; if called from the same module as the
        attributes are being deprecated in, using the C{__name__} global can
        be helpful

    @type name: C{str}
    @param name: Attribute name to deprecate
    """
    module = sys.modules[moduleName]
    if not isinstance(module, _ModuleProxy):
        module = _ModuleProxy(module)
        sys.modules[moduleName] = module

    _deprecateAttribute(module, name, version, message)

    Declare a module-level attribute as being deprecated.

    @type version: L{incremental.Version}
    @param version: Version that the attribute was deprecated in

    @type message: C{str}
    @param message: Deprecation message

    @type moduleName: C{str}
    @param moduleName: Fully-qualified Python name of the module containing
        the deprecated attribute; if called from the same module as the
        attributes are being deprecated in, using the C{__name__} global can
        be helpful

    @type name: C{str}
    @param name: Attribute name to deprecate
    
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/deprecate.py