Refactor analysis blocks + replace str by objects for signatures in comments

3 jobs for topic/default/signatures-comments-type-variables in 9 minutes and 16 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed step_pythran_cython #78925

00:07:34

passed step_pythran_then_cython #78924

00:09:15

passed step_without_pythran #78923

00:03:26