thread: add __implements__

gevent/thread.py

@@ -7,7 +7,17 @@
     :class:`Greenlet` class.
 """
 
-__thread = __import__('thread')
+__implements__ = ['allocate_lock',
+                  'get_ident',
+                  'exit',
+                  'LockType',
+                  'stack_size',
+                  'start_new_thread']
+
+__imports__ = ['error']
+
+__thread__ = __import__('thread')
+error = __thread__.error
 from gevent.hub import getcurrent, GreenletExit
 from gevent.greenlet import Greenlet
 from gevent.coros import Semaphore as LockType
@@ -32,8 +42,10 @@ def allocate_lock():
 def exit():
     raise GreenletExit
 
-if hasattr(__thread, 'stack_size'):
-    _original_stack_size = __thread.stack_size
+
+if hasattr(__thread__, 'stack_size'):
+    _original_stack_size = __thread__.stack_size
+
     def stack_size(size=None):
         if size is None:
             return _original_stack_size()
@@ -42,5 +54,10 @@ if hasattr(__thread, 'stack_size'):
         else:
             pass
             # not going to decrease stack_size, because otherwise other greenlets in this thread will suffer
+else:
+    __implements__.remove('stack_size')
+
+
+__all__ = __implements__ + __imports__
 
 # XXX interrupt_main, _local