Indicate python version compatibility

README.md

 # DAN: a Segmentation-free Document Attention Network for Handwritten Document Recognition
 
+[![Python >= 3.10](https://img.shields.io/badge/Python-%3E%3D3.10-blue.svg)](https://www.python.org/downloads/release/python-3100/)
+
 ## Documentation
 
 To use DAN in your own scripts, install it using pip:

setup.py

@@ -21,6 +21,7 @@ setup(
     author="Teklia",
     author_email="contact@teklia.com",
     url="https://gitlab.com/teklia/atr/dan",
+    python_requires=">=3.10",
     install_requires=parse_requirements("requirements.txt"),
     packages=find_packages(),
     entry_points={