How to delete text and oleobject by regex

Dear, I have a question, how to delete content between MStart[\s\S]*?Mend here in python asponse? Thanks.

And the object between MStart and MEnd is oleobject ~

@ZZZ21321 Unfortunately, it is not possible to achieve this using find/replace functionality in Python version of Aspose.Words. This is possible to achieve using IReplacingCallback in .NET, Java or C++ versions. Unfortunately, this feature is not yet available in Python version. The feature request is logged as WORDSNET-24685. We will keep you informed and let you know once the feature is available.
While you are waiting for implementation, could you please attach your sample document here for our reference? we will check it and if possible provide you a workaround.