Move PROBE_FIELD to module scope (#3318)

beetsplug/absubmit.py

@@ -32,6 +32,9 @@
 from beets import util
 from beets import ui
 
+# We use this field to check whether AcousticBrainz info is present.
+PROBE_FIELD = 'mood_acoustic'
+
 
 class ABSubmitError(Exception):
     """Raised when failing to analyse file with extractor."""
@@ -61,9 +64,6 @@ def __init__(self):
             'pretend': False
         })
 
-        # Define a field which shows that acousticbrainz info is present
-        self.PROBE_FIELD = 'mood_acoustic'
-
         self.extractor = self.config['extractor'].as_str()
         if self.extractor:
             self.extractor = util.normpath(self.extractor)
@@ -135,7 +135,7 @@ def _get_analysis(self, item):
 
         # If file has no mbid skip it.
         if not self.opts.force_refetch and not self.config['force']:
-            mood_str = item.get(self.PROBE_FIELD, u'')
+            mood_str = item.get(PROBE_FIELD, u'')
             if mood_str:
                 return None