[orca/wip/kalev/python3.10: 3/3] Fix compatibility with Python 3.10

[Joanmarie Diggs <joanied src gnome org>]

commit 41b7a370addd507d6583c135c8ac99c7c06076e5
Author: Kalev Lember <klember redhat com>
Date:   Fri Sep 10 10:12:23 2021 +0200

    Fix compatibility with Python 3.10
    
    Python 3.10 removed aliases to Collections Abstract Base Classes that
    were deprecated in Python 3.3.
    
    Fix this by just using collections.abc directly without using the alias.
    
    https://docs.python.org/3.10/whatsnew/changelog.html#python-3-10-0-alpha-5

 src/orca/generator.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/orca/generator.py b/src/orca/generator.py
index e98970992..e9a9d89de 100644
--- a/src/orca/generator.py
+++ b/src/orca/generator.py
@@ -78,7 +78,7 @@ class Generator:
         self._activeProgressBars = {}
         self._methodsDict = {}
         for method in \
-            [z for z in [getattr(self, y).__get__(self, self.__class__) for y in [x for x in dir(self) if 
x.startswith(METHOD_PREFIX)]] if isinstance(z, collections.Callable)]:
+            [z for z in [getattr(self, y).__get__(self, self.__class__) for y in [x for x in dir(self) if 
x.startswith(METHOD_PREFIX)]] if isinstance(z, collections.abc.Callable)]:
             name = method.__name__[len(METHOD_PREFIX):]
             name = name[0].lower() + name[1:]
             self._methodsDict[name] = method