added marshal to formats supported by feed exports

docs/topics/feed-exports.rst

@@ -64,6 +64,15 @@ XML
  * :setting:`FEED_FORMAT`: ``xml``
  * Exporter used: :class:`~scrapy.contrib.exporter.XmlItemExporter`
 
+.. _topics-feed-format-marshal:
+
+Marshal
+-------
+
+ * :setting:`FEED_FORMAT`: ``marshal``
+ * Exporter used: :class:`~scrapy.contrib.exporter.MarshalItemExporter`
+
+
 .. _topics-feed-storage:
 
 Storages
@@ -267,6 +276,7 @@ Default::
         'jsonlines': 'scrapy.contrib.exporter.JsonLinesItemExporter',
         'csv': 'scrapy.contrib.exporter.CsvItemExporter',
         'xml': 'scrapy.contrib.exporter.XmlItemExporter',
+        'marshal': 'scrapy.contrib.exporter.MarshalItemExporter',
     }
 
 A dict containing the built-in feed exporters supported by Scrapy.

scrapy/contrib/exporter/__init__.py

@@ -4,6 +4,7 @@ Item Exporters are used to export/serialize items into different formats.
 
 import csv
 import pprint
+import marshal
 from cPickle import Pickler
 from xml.sax.saxutils import XMLGenerator
 
@@ -12,7 +13,7 @@ from scrapy.utils.py26 import json
 
 __all__ = ['BaseItemExporter', 'PprintItemExporter', 'PickleItemExporter', \
     'CsvItemExporter', 'XmlItemExporter', 'JsonLinesItemExporter', \
-    'JsonItemExporter']
+    'JsonItemExporter', 'MarshalItemExporter']
 
 class BaseItemExporter(object):
 
@@ -185,6 +186,16 @@ class PickleItemExporter(BaseItemExporter):
         self.pickler.dump(dict(self._get_serialized_fields(item)))
 
 
+class MarshalItemExporter(BaseItemExporter):
+
+    def __init__(self, file, **kwargs):
+        self._configure(kwargs)
+        self.file = file
+
+    def export_item(self, item):
+        marshal.dump(dict(self._get_serialized_fields(item)), self.file)
+
+
 class PprintItemExporter(BaseItemExporter):
 
     def __init__(self, file, **kwargs):

scrapy/settings/default_settings.py

@@ -162,6 +162,7 @@ FEED_EXPORTERS_BASE = {
     'jsonlines': 'scrapy.contrib.exporter.JsonLinesItemExporter',
     'csv': 'scrapy.contrib.exporter.CsvItemExporter',
     'xml': 'scrapy.contrib.exporter.XmlItemExporter',
+    'marshal': 'scrapy.contrib.exporter.MarshalItemExporter',
 }
 
 HTTPCACHE_ENABLED = False