python3-zope.deferredimport 5.0-2 (amd64 binary) in ubuntu oracular

 Often, especially for package modules, you want to import names for
 convenience, but not actually perform the imports until necessary.
 The zope.deferredimport package provides facilities for defining names
 in modules that will be imported from somewhere else when used. You
 can also cause deprecation warnings to be issued when a variable is
 used.