From bf3fe7c08e129ac9a89e3a3e52613e63299779e1 Mon Sep 17 00:00:00 2001
From: "Mike C. Fletcher" <mcfletch@vrplumber.com>
Date: Sat, 28 Dec 2019 11:48:43 -0500
Subject: [PATCH] Explicitly add nonzero methods for base latebind classes

---
 OpenGL/latebind.py          | 4 +++-
 accelerate/src/latebind.pyx | 5 +++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/OpenGL/latebind.py b/OpenGL/latebind.py
index dc28dc28..3b01133f 100644
--- a/OpenGL/latebind.py
+++ b/OpenGL/latebind.py
@@ -29,7 +29,9 @@ def finalise( self ):
 
             return final callable
             """
-
+        def __nonzero__(self):
+            """Resolve our final call and check for empty/nonzero on it"""
+            return bool(self.getFinalCall())
         def __call__( self, *args, **named ):
             """Call self._finalCall, calling finalise() first if not already called
 
diff --git a/accelerate/src/latebind.pyx b/accelerate/src/latebind.pyx
index f2748240..f009a76e 100644
--- a/accelerate/src/latebind.pyx
+++ b/accelerate/src/latebind.pyx
@@ -14,6 +14,11 @@ cdef class LateBind:
     def finalise( self ):
         """Finalise our target to our final callable object"""
 
+    def __nonzero__(self):
+        """Resolve our final call and check for empty/nonzero on it"""
+        return bool(self.getFinalCall())
+    __bool__ = __nonzero__
+
     def getFinalCall( self ):
         """Retrieve and/or bind and retrieve final call"""
         if not self._finalCall: