Using abstraction base class Callable under collections.abc. (LP: #1875310)

fix issue below: audio_test:127: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.9 it will stop working if not isinstance(method, collections.Callable): 

1 files changed, 5 insertions, 1 deletions

diff --git a/bin/audio_test b/bin/audio_test
index 466b7602..7bd6c441 100755
--- a/bin/audio_test
+++ b/bin/audio_test
@@ -24,6 +24,10 @@ except ImportError:
 print((sys.version), file=sys.stderr)
 sys.exit(127)
 
+try:
+ from collections.abc import Callable
+except ImportError:
+ from collections import Callable # backward compatible
 
 #Frequency bands for FFT
 BINS = 256
@@ -124,7 +128,7 @@ class PAVolumeController(object):
 self._volume = None
 self.identifier = None
 self.method = method
- if not isinstance(method, collections.Callable):
+ if not isinstance(method, Callable):
 self.method = self._pactl_output
 self.logger = logger