how to convert docx file into rtf file using python Is there is any module to do this?

You can use docx module and install docx module with this instruction : pip install python-docx. Check the code.

from docx import Document

f = open('test.docx', 'rb')
document = Document(f)

document.save('test.rtf')

https://pypi.org/project/pyandoc/ this may help

Let’s start with a Markdown document:

doc = pandoc.Document()
doc.markdown = '''
# I am an H1 Tag

* bullet point
* more points
* point with [link](http://kennethreitz.com)!

Now let’s convert that into a ReST document:

>>> print doc.rst

I am an H1 Tag
==============


-  bullet point
-  more points
-  point with `link <http://kennethreitz.com>`_!

edit: read the docs