FIX Handle case where description is empty in returns (#148)

numpydoc/docscrape_sphinx.py

@@ -84,10 +84,11 @@ def _str_returns(self, name='Returns'):
                                                           param_type)])
                 else:
                     out += self._str_indent([untyped_fmt % param.strip()])
-                if desc:
-                    if self.use_blockquotes:
-                        out += ['']
-                    out += self._str_indent(desc, 8)
+                if desc and self.use_blockquotes:
+                    out += ['']
+                elif not desc:
+                    desc = ['..']
+                out += self._str_indent(desc, 8)
                 out += ['']
         return out
 

numpydoc/tests/test_docscrape.py

@@ -64,6 +64,7 @@
   list of str
       This is not a real return value.  It exists to test
       anonymous return values.
+  no_description
 
   Other Parameters
   ----------------
@@ -184,7 +185,7 @@ def test_other_parameters():
 
 
 def test_returns():
-    assert_equal(len(doc['Returns']), 2)
+    assert_equal(len(doc['Returns']), 3)
     arg, arg_type, desc = doc['Returns'][0]
     assert_equal(arg, 'out')
     assert_equal(arg_type, 'ndarray')
@@ -197,6 +198,11 @@ def test_returns():
     assert desc[0].startswith('This is not a real')
     assert desc[-1].endswith('anonymous return values.')
 
+    arg, arg_type, desc = doc['Returns'][2]
+    assert_equal(arg, 'no_description')
+    assert_equal(arg_type, '')
+    assert not ''.join(desc).strip()
+
 
 def test_yields():
     section = doc_yields['Yields']
@@ -373,6 +379,7 @@ def test_str():
 list of str
     This is not a real return value.  It exists to test
     anonymous return values.
+no_description
 
 Other Parameters
 ----------------
@@ -506,6 +513,9 @@ def test_sphinx_str():
         This is not a real return value.  It exists to test
         anonymous return values.
 
+    no_description
+        ..
+
 :Other Parameters:
 
     spam : parrot