fixed typos in comments and descrptions in Python API

openmc/statepoint.py

@@ -404,7 +404,7 @@ class StatePoint(object):
                     for j in range(i+1, n_filters):
                         filter.stride *= tally.filters[j].num_bins
 
-                # Read scattering moment order strings (e.g., P3, Y-1,2, etc.)
+                # Read scattering moment order strings (e.g., P3, Y1,2, etc.)
                 moments = self._f['{0}{1}/moment_orders'.format(
                     base, tally_key)].value
 

openmc/summary.py

@@ -518,7 +518,7 @@ class Summary(object):
             # Create Tally object and assign basic properties
             tally = openmc.Tally(tally_id, tally_name)
 
-            # Read scattering moment order strings (e.g., P3, Y-1,2, etc.)
+            # Read scattering moment order strings (e.g., P3, Y1,2, etc.)
             moments = self._f['{0}/moment_orders'.format(subbase)].value
 
             # Read score metadata

openmc/tallies.py

@@ -66,7 +66,9 @@ class Tally(object):
     triggers : list of openmc.trigger.Trigger
         List of tally triggers
     num_scores : Integral
-        Total number of user-specified scores
+        Total number of scores, accounting for the fact that a single
+        user-specified score, e.g. scatter-P3 or flux-Y2,2, might have multiple
+        bins
     num_filter_bins : Integral
         Total number of filter bins accounting for all filters
     num_bins : Integral