Closes #18435: Merged fix from 3.3.

Lib/venv/__init__.py

@@ -37,15 +37,10 @@ try:
     import threading
 except ImportError:
     threading = None
+import types
 
 logger = logging.getLogger(__name__)
 
-class Context:
-    """
-    Holds information about a current venv creation/upgrade request.
-    """
-    pass
-
 
 class EnvBuilder:
     """
@@ -116,7 +111,7 @@ class EnvBuilder:
 
         if os.path.exists(env_dir) and self.clear:
             self.clear_directory(env_dir)
-        context = Context()
+        context = types.SimpleNamespace()
         context.env_dir = env_dir
         context.env_name = os.path.split(env_dir)[1]
         context.prompt = '(%s) ' % context.env_name