FIX parsing of type-only return params

Author: timhoffm

numpydoc/docscrape.py

@@ -211,15 +211,18 @@ def _read_sections(self):
             else:
                 yield name, self._strip(data[2:])
 
-    def _parse_param_list(self, content):
+    def _parse_param_list(self, content, single_element_is_type=False):
         r = Reader(content)
         params = []
         while not r.eof():
             header = r.read().strip()
             if ' : ' in header:
                 arg_name, arg_type = header.split(' : ')[:2]
             else:
-                arg_name, arg_type = header, ''
+                if single_element_is_type:
+                    arg_name, arg_type = '', header
+                else:
+                    arg_name, arg_type = header, ''
 
             desc = r.read_to_next_unindented_line()
             desc = dedent_lines(desc)
@@ -351,10 +354,12 @@ def _parse(self):
                     self._error_location("The section %s appears twice"
                                          % section)
 
-            if section in ('Parameters', 'Returns', 'Yields', 'Raises',
-                           'Warns', 'Other Parameters', 'Attributes',
+            if section in ('Parameters', 'Other Parameters', 'Attributes',
                            'Methods'):
                 self[section] = self._parse_param_list(content)
+            elif section in ('Returns', 'Yields', 'Raises', 'Warns'):
+                self[section] = self._parse_param_list(
+                    content, single_element_is_type=True)
             elif section.startswith('.. index::'):
                 self['index'] = self._parse_index(section, content)
             elif section == 'See Also':