➜  ~ pip3 install pypandoc
Collecting pypandoc
  Downloading pypandoc-1.15-py3-none-any.whl.metadata (16 kB)
Downloading pypandoc-1.15-py3-none-any.whl (21 kB)
Installing collected packages: pypandoc
Successfully installed pypandoc-1.15

➜  ~ python3 -c "import pypandoc; pypandoc.convert_text(open('input.md').read(), 'docx', format='md', outputfile='output.docx', extra_args=['--standalone'])"