import subprocess
docx_file='./Docx/《动能定理》巩固练习.docx'
temp_markdown='./Res/《动能定理》巩固练习.md'

subprocess.run(['pandoc', docx_file, '-f', 'docx', '-t', 'markdown', '-o', temp_markdown,
                    '--extract-media=./Res/Images/'])