python3.5 sees but python3.9 does not see sqlite3

Question

+++++++++++++++ My machine: +++++++++++++++ Linux eyes 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u3 (2019-06-16) x86_64 GNU/Linux

i.e. python3.5 is i