Edit file File name : debian_defaults Content :[DEFAULT] # the default python3 version default-version = python3.8 # all supported python3 versions supported-versions = python3.8 # formerly supported python3 versions old-versions = python3.1, python3.2, python3.3, python3.4, python3.5, python3.6, python3.7 # unsupported versions, including older versions unsupported-versions = python3.1, python3.2, python3.3, python3.4, python3.5, python3.6, python3.7 Save