Simplified module pre-loading strategy and made it linter friendly

Introduced a modules registry to register modules that should be lazily loaded
in the package init. This ensures that they are in the system module cache,
avoiding potential thread safety issues as when importing them directly
in the function that uses them. The module registry is used to obtain
these modules directly, ensuring that the all the lazily loaded modules
are resolved at the proper time

This replaces dependency_for decorator and the dependencies decorator logic,
removing the need to pass the resolved modules as arguments of the
decodated functions and removes possible errors caused by linters.

Fixes: #4689
Fixes: #4656
Change-Id: I2e291eba4297867fc0ddb5d875b9f7af34751d01

1 files changed, 1 insertions, 1 deletions

diff --git a/examples/versioned_history/history_meta.py b/examples/versioned_history/history_meta.py
index eb824bd7b..f2b3f8118 100644
--- a/examples/versioned_history/history_meta.py
+++ b/examples/versioned_history/history_meta.py
@@ -14,7 +14,7 @@ from sqlalchemy.orm import attributes
 from sqlalchemy.orm import mapper
 from sqlalchemy.orm import object_mapper
 from sqlalchemy.orm.exc import UnmappedColumnError
-from sqlalchemy.orm.properties import RelationshipProperty
+from sqlalchemy.orm.relationships import RelationshipProperty
 
 
 def col_references_table(col, table):