Expanding on Vitaly's first point: Search is available in the AppEngine Standard environment with the "first generation" runtimes (ie. with Python 2.7 but not with Python 3.7).
Attila -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/42f25fec-1c1e-48e0-aaed-0787a3b8507a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
