File read write or update

i want to read and update docx(document file) file using frappe. file is store my computer it is possible or not

Hii @Govind_Gupta

You can edit or modify as per your requirements please refer frappe documentation for how to use doctype controller files (and also theri methods) which is store in your system when you create new doctype :
https://frappeframework.com/docs/v15/user/en/basics/doctypes/controllers

I hope this is helpful for you