Add option to decode responses in python3 (#146)

Author: owenstranathan

src/scrapy_redis/connection.py

@@ -1,3 +1,5 @@
+import sys
+
 import six
 
 from scrapy.utils.misc import load_object
@@ -14,6 +16,9 @@
     'REDIS_ENCODING': 'encoding',
 }
 
+if sys.version_info > (3,):
+    SETTINGS_PARAMS_MAP['REDIS_DECODE_RESPONSES'] = 'decode_responses'
+
 
 def get_redis_from_settings(settings):
     """Returns a redis client instance from given Scrapy settings object.
@@ -47,6 +52,11 @@ def get_redis_from_settings(settings):
     REDIS_PARAMS : dict, optional
         Additional client parameters.
 
+    Python 3 Only
+    ----------------
+    REDIS_DECODE_RESPONSES : bool, optional
+        Sets the `decode_responses` kwarg in Redis cls ctor
+
     """
     params = defaults.REDIS_PARAMS.copy()
     params.update(settings.getdict('REDIS_PARAMS'))