[docs,cleanup] Some minor refactoring and improve docs

2 files changed, 9 insertions, 5 deletions

diff --git a/devscripts/lazy_load_template.py b/devscripts/lazy_load_template.py
index 036e2e767..da89e070d 100644
--- a/devscripts/lazy_load_template.py
+++ b/devscripts/lazy_load_template.py
@@ -1,9 +1,15 @@
 # coding: utf-8
 import re
 
+from ..utils import bug_reports_message, write_string
+
 
 class LazyLoadMetaClass(type):
     def __getattr__(cls, name):
+        if '_real_class' not in cls.__dict__:
+            write_string(
+                f'WARNING: Falling back to normal extractor since lazy extractor '
+                f'{cls.__name__} does not have attribute {name}{bug_reports_message()}')
         return getattr(cls._get_real_class(), name)
 
 
@@ -13,10 +19,10 @@ class LazyLoadExtractor(metaclass=LazyLoadMetaClass):
 
     @classmethod
     def _get_real_class(cls):
-        if '__real_class' not in cls.__dict__:
+        if '_real_class' not in cls.__dict__:
             mod = __import__(cls._module, fromlist=(cls.__name__,))
-            cls.__real_class = getattr(mod, cls.__name__)
-        return cls.__real_class
+            cls._real_class = getattr(mod, cls.__name__)
+        return cls._real_class
 
     def __new__(cls, *args, **kwargs):
         real_cls = cls._get_real_class()
diff --git a/devscripts/make_lazy_extractors.py b/devscripts/make_lazy_extractors.py
index e7b024490..427045b98 100644
--- a/devscripts/make_lazy_extractors.py
+++ b/devscripts/make_lazy_extractors.py
@@ -7,8 +7,6 @@ import os
 from os.path import dirname as dirn
 import sys
 
-print('WARNING: Lazy loading extractors is an experimental feature that may not always work', file=sys.stderr)
-
 sys.path.insert(0, dirn(dirn((os.path.abspath(__file__)))))
 
 lazy_extractors_filename = sys.argv[1]