obi stats: improved display with str instead of bytes

python/obitools3/commands/stats.pyx

@@ -7,6 +7,7 @@ from obitools3.apps.optiongroups import addMinimalInputOption, addTaxonomyOption
 from obitools3.dms.view import RollbackException
 from obitools3.apps.config import logger
 from obitools3.dms.capi.obiview cimport COUNT_COLUMN
+from obitools3.utils cimport tostr
 
 from functools import reduce
 import math
@@ -248,7 +249,7 @@ def run(config):
     for i in range(len(sorted_stats)):
         c = sorted_stats[i][0]
         for v in c:
-            print(pcat % str(v)+"\t", end="")
+            print(pcat % tostr(v)+"\t", end="")
         for m in config['stats']['minimum']:
             print((("%%%dd" % lmini[m]) % mini[m][c])+"\t", end="")
         for m in config['stats']['maximum']: