add custom separator

glue.py

@@ -4,7 +4,9 @@ import collections
 def glue(*args, **kwargs):
     """
         Glue takes in any number of arguments, named or not, and any depth list
-        It will flatten them all and return them joined with spaces.
+        It will flatten them all and return them joined with kwargs['separator']
+        (This is the only kwarg that will be used, anything else will be
+            included)
     """
 
     def _flatten(l):
@@ -19,6 +21,10 @@ def glue(*args, **kwargs):
             else:
                 yield el
 
+    separator = ' '  # default
+    if 'separator' in kwargs:
+        separator = kwargs.pop('separator')
+
     # I dont care what order you submit them in, they will be alphabetical
     kwargs = collections.OrderedDict(
         sorted(kwargs.items(), key=lambda t: t[0]))
@@ -30,5 +36,7 @@ def glue(*args, **kwargs):
     # flatten crap out of this!
     what_to_glue = _flatten(what_to_glue)
 
+    #set separator
+
     # safeguard against nonstrings
-    return " ".join([str(x) for x in what_to_glue])
+    return separator.join(str(x) for x in what_to_glue)

tests.py

@@ -8,6 +8,10 @@ class GlueTests(unittest.TestCase):
           output = glue("why", "would", "you", "run", "these", "tests")
           assert output == "why would you run these tests"
 
+      def test_tuple_custom_separator(self):
+          output = glue("why", "would", "you", separator=",")
+          assert output == "why,would,you"
+
       def test_tuple_and_named(self):
           output = glue("why", "would", "you", "run", "these", "tests", who="bozo")
           assert output == "why would you run these tests bozo"