import zipfile
import os

zipf = zipfile.ZipFile(r"D:\USTH\KLTN\cxr-vlm-code.zip", 'w', zipfile.ZIP_DEFLATED)

for root, dirs, files in os.walk('KLTN'):
    for file in files:
        filepath = os.path.join(root, file)
        arcname = os.path.relpath(filepath, 'KLTN')
        zipf.write(filepath, arcname)

zipf.close()