[pybliographer] scripts: Use plurals on pybliocheck

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 31d2307e2a9c5930f3eb6932c1ee20ac14750bf5
Author: Germán Poo-Caamaño <gpoo gnome org>
Date:   Wed Mar 28 20:00:57 2018 -0300

    scripts: Use plurals on pybliocheck

 scripts/pybliocheck.py |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/scripts/pybliocheck.py b/scripts/pybliocheck.py
index f081a4e..343a480 100644
--- a/scripts/pybliocheck.py
+++ b/scripts/pybliocheck.py
@@ -25,6 +25,9 @@ import os
 import sys
 import string
 
+from gettext import gettext as _
+from gettext import ngettext as _n
+
 from Pyblio import Config, Exceptions
 from Pyblio.Open import bibopen
 
@@ -62,7 +65,10 @@ for dir in sys.argv [2:]:
         # try to open the database
         try:
             b = bibopen (f)
-            print (_(u"file “%s” is ok [%d entries]") % (f, len (b))).encode (charset)
+            print (_n(u"file “%s” is ok [%d entry]",
+                      u"file “%s” is ok [%d entries]",
+                      len(b))
+                   % (f, len (b))).encode(charset)
         except (Exceptions.ParserError, KeyError), err:
             broken.append (str (err))