> What options do we have in Python world if someone wants to migrate CMS based sites built using WordPress ?
It is more of an equivalent to Drupal than WP in terms of scope, but Plone[0] has been used on a lot of sites, and has ticked all of the boxes mentioned (i18n, a11y, etc.) for a very long time. The underlying Zope web application framework isn't particularly popular these days, but is a solid (if somewhat idiosyncratic) foundation. At 22 years old, you could call Zope the emacs of Python web frameworks.
There are also a variety of CMSs based on Django or Flask, but I'm less familiar with those.
It is more of an equivalent to Drupal than WP in terms of scope, but Plone[0] has been used on a lot of sites, and has ticked all of the boxes mentioned (i18n, a11y, etc.) for a very long time. The underlying Zope web application framework isn't particularly popular these days, but is a solid (if somewhat idiosyncratic) foundation. At 22 years old, you could call Zope the emacs of Python web frameworks.
There are also a variety of CMSs based on Django or Flask, but I'm less familiar with those.
[0] https://plone.org/