Adds a separator keyword argument to Interval.in_words() method

Author: sdispater

pendulum/mixins/interval.py

@@ -5,12 +5,18 @@
 
 class WordableIntervalMixin(TranslatableMixin):
 
-    def in_words(self, locale=None):
+    def in_words(self, locale=None, separator=' '):
         """
         Get the current interval in words in the current locale.
 
         Ex: 6 jours 23 heures 58 minutes
 
+        :param locale: The locale to use. Defaults to current locale.
+        :type locale: str
+
+        :param separator: The separator to use between each unit
+        :type separator: str
+
         :rtype: str
         """
         periods = [
@@ -29,7 +35,7 @@ def in_words(self, locale=None):
                     self.translator().transchoice(unit, abs(count), {'count': count}, locale=locale)
                 )
 
-        return ' '.join(parts)
+        return separator.join(parts)
 
     def __str__(self):
         return self.in_words()

tests/interval_tests/test_in_words.py

@@ -50,3 +50,10 @@ def test_singluar_negative_values(self):
             '-1 day',
             pi.in_words()
         )
+
+    def test_separator(self):
+        pi = Interval(days=1177, seconds=7284, microseconds=1000000)
+        self.assertEqual(
+            '168 weeks, 1 day, 2 hours, 1 minute, 25 seconds',
+            pi.in_words(separator=', ')
+        )