issue #257

Author: maxtepkeev

CHANGELOG.rst

@@ -21,6 +21,8 @@ Changelog
 
 - Project resource ``default_version`` attribute was returned as a dict instead of being converted to
   Resource object
+- Resource object was leaking memory during initialization (`Issue #257 <https://github.com/maxtepkeev/python-redmine/
+  issues/257>`__) (thanks to `yihli <https://github.com/qianyi3210>`__)
 
 **Documentation**:
 

redminelib/resources/base.py

@@ -139,8 +139,8 @@ def __init__(self, manager, attributes):
         relations_includes = self._relations + self._includes
 
         self.manager = manager
-        self._create_readonly += relations_includes
-        self._update_readonly += relations_includes
+        self._create_readonly = self._create_readonly[:] + relations_includes
+        self._update_readonly = self._update_readonly[:] + relations_includes
         self._decoded_attrs = dict(dict.fromkeys(relations_includes), **attributes)
         self._encoded_attrs = {}
         self._changes = {}